Dr Herman Wildrik Barkema

All Stories

1. 
   Antioxidative Sirt1 and the Keap1-Nrf2 Signaling Pathway Impair Inflammation and Positively Regulate Autophagy in Murine Mammary Epithelial Cells or Mammary Glands Infected with Streptococcus uberis

   Article • Antioxidants, January 2024, MDPI AG

   Dr Herman Wildrik Barkema

2. 
   Adoption and decision factors regarding selective treatment of clinical mastitis on Canadian dairy farms

   Article • Journal of Dairy Science, January 2024, American Dairy Science Association

   Dr Herman Wildrik Barkema

3. 
   Editorial: Zoonoses - a one health approach

   Article • Frontiers in Public Health, December 2023, Frontiers

   Dr Herman Wildrik Barkema

4. 
   Outdoor access practices in the Canadian dairy industry

   Article • Journal of Dairy Science, November 2023, American Dairy Science Association

   Dr Herman Wildrik Barkema

5. 
   Comparative genomic analyses of Klebsiella pneumoniae K57 capsule serotypes isolated from bovine mastitis in China

   Article • Journal of Dairy Science, November 2023, American Dairy Science Association

   Dr Herman Wildrik Barkema

6. 
   Antimicrobial and teat sealant use and selection criteria at dry-off on Canadian dairy farms

   Article • Journal of Dairy Science, October 2023, American Dairy Science Association

   Dr Herman Wildrik Barkema

7. 
   Frequency of isolation and phenotypic antimicrobial resistance of fecal Salmonella enterica recovered from dairy cattle in Canada

   Article • Journal of Dairy Science, October 2023, American Dairy Science Association

   Dr Herman Wildrik Barkema

8. 
   Seeing the whole elephant: designing ‘one health’ governance to fight antimicrobial resistance

   Article • Clinical Microbiology and Infection, October 2023, Elsevier

   Dr Herman Wildrik Barkema

9. 
   MicroRNA miR-223 modulates NLRP3 and Keap1, mitigating lipopolysaccharide-induced inflammation and oxidative stress in bovine mammary epithelial cells and murine mammary glands

   Article • Veterinary Research, September 2023, Springer Science + Business Media

   Dr Herman Wildrik Barkema

10. 
    Effects of bovine leukemia virus seropositivity and proviral load on milk, fat, and protein production of dairy cows

    Article • Journal of Dairy Science, September 2023, American Dairy Science Association

    Dr Herman Wildrik Barkema

11. 
    Within-herd transmission of Mycoplasma bovis infections after initial detection in dairy cows

    Article • Journal of Dairy Science, September 2023, American Dairy Science Association

    Dr Herman Wildrik Barkema

12. 
    Integrated Comparative Transcriptome and circRNA-lncRNA-miRNA-mRNA ceRNA Regulatory Network Analyses Identify Molecular Mechanisms Associated with Intramuscular Fat Content in Beef Cattle

    Article • Animals, August 2023, MDPI AG

    Dr Herman Wildrik Barkema

13. 
    Perceptions of antimicrobial stewardship: identifying drivers and barriers across various professions in Canada utilizing a one health approach

    Article • Frontiers in Public Health, August 2023, Frontiers

    Dr Herman Wildrik Barkema

14. 
    Investigating Goat Fertility through CircRNA-lincRNA-miRNA-mRNA ceRNA Regulatory Network

    Article • Frontiers in Genetics, July 2023, Frontiers

    Dr Herman Wildrik Barkema

15. 
    Use of an online gaming tool, the Veterinary DialogueTrainer, for teaching clinical communication skills to bovine veterinary practitioners

    Article • Frontiers in Veterinary Science, July 2023, Frontiers

    Dr Herman Wildrik Barkema

16. 
    Intramammary and systemic use of antimicrobials and their association with resistance in generic Escherichia coli recovered from fecal samples from Canadian dairy herds: A cross-sectional study

    Article • Preventive Veterinary Medicine, July 2023, Elsevier

    Dr Herman Wildrik Barkema

17. 
    Quantifying antimicrobial use on Canadian dairy farms using garbage can audits

    Article • Frontiers in Veterinary Science, June 2023, Frontiers

    Dr Herman Wildrik Barkema

18. 
    Comparative Genomic Analyses of Lactococcus garvieae Isolated from Bovine Mastitis in China

    Article • Microbiology Spectrum, June 2023, ASM Journals

    Dr Herman Wildrik Barkema

19. 
    Patient compliance with the implementation of a decolonization strategy for Staphylococcus aureus in hip and knee replacements

    Article • American Journal of Infection Control, June 2023, Elsevier

    Dr Herman Wildrik Barkema

20. 
    Baseline prevalence of antimicrobial resistance in patients who develop a surgical site infection in hip and knee replacements: A brief report

    Article • American Journal of Infection Control, June 2023, Elsevier

    Dr Herman Wildrik Barkema

21. 
    Antimicrobial use and its association with the isolation of and antimicrobial resistance in Campylobacter spp. recovered from fecal samples from Canadian dairy herds: A cross-sectional study

    Article • Preventive Veterinary Medicine, June 2023, Elsevier

    Dr Herman Wildrik Barkema

22. 
    Invited review: Selective treatment of clinical mastitis in dairy cattle

    Article • Journal of Dairy Science, June 2023, American Dairy Science Association

    Dr Herman Wildrik Barkema

23. 
    Re-emergence of canine Leishmania infantum infection in mountain areas of Beijing

    Article • One Health Advances, March 2023, Springer Science + Business Media

    Dr Herman Wildrik Barkema

24. 
    Incidence, susceptibility and outcomes of candidemia in adults living in Calgary, Alberta, Canada (2010–2018)

    Article • BMC Infectious Diseases, February 2023, Springer Science + Business Media

    Dr Herman Wildrik Barkema

25. 
    Selective treatment of nonsevere clinical mastitis does not adversely affect cure, somatic cell count, milk yield, recurrence, or culling: A systematic review and meta-analysis

    Article • Journal of Dairy Science, February 2023, American Dairy Science Association

    Dr Herman Wildrik Barkema

26. 
    Broad-spectrum infrared thermography for detection of M2 digital dermatitis lesions on hind feet of standing dairy cattle

    Article • PLoS ONE, January 2023, PLOS

    Dr Herman Wildrik Barkema

27. 
    Underlying genetic architecture of resistance to mastitis in dairy cattle: A systematic review and gene prioritization analysis of genome-wide association studies

    Article • Journal of Dairy Science, January 2023, American Dairy Science Association

    Dr Herman Wildrik Barkema

28. 
    In-depth systems biological evaluation of bovine alveolar macrophages suggests novel insights into molecular mechanisms underlying Mycobacterium bovis infection

    Article • Frontiers in Microbiology, November 2022, Frontiers

    Dr Herman Wildrik Barkema

29. 
    Associations of the COVID-19 pandemic with the reported incidence of important endemic infectious disease agents and syndromes in Pakistan

    Article • BMC Infectious Diseases, November 2022, Springer Science + Business Media

    Dr Herman Wildrik Barkema

30. 
    Diagnosing Intramammary Infection: Meta-Analysis and Mapping Review on Frequency and Udder Health Relevance of Microorganism Species Isolated from Bovine Milk Samples

    Article • Animals, November 2022, MDPI AG

    Dr Herman Wildrik Barkema

31. 
    Associations of calf management practices with antimicrobial use in Canadian dairy calves

    Article • Journal of Dairy Science, November 2022, American Dairy Science Association

    Dr Herman Wildrik Barkema

32. 
    Canada has an opportunity to address antimicrobial resistance through COVID-19 recovery spending

    Article • The Lancet Regional Health - Americas, November 2022, Elsevier

    Dr Herman Wildrik Barkema

33. 
    Contextualized understandings of dairy farmers' perspectives on antimicrobial use and regulation in Alberta, Canada

    Article • Journal of Dairy Science, November 2022, American Dairy Science Association

    Dr Herman Wildrik Barkema

34. 
    Biological and genomic characteristics of two bacteriophages isolated from sewage, using one multidrug-resistant and one non-multidrug-resistant strain of Klebsiella pneumoniae

    Article • Frontiers in Microbiology, October 2022, Frontiers

    Dr Herman Wildrik Barkema

35. 
    Disease control tools to secure animal and public health in a densely populated world

    Article • The Lancet Planetary Health, October 2022, Elsevier

    Dr Herman Wildrik Barkema

36. 
    Integrated transcriptome and regulatory network analyses identify candidate genes and pathways modulating ewe fertility

    Article • Gene Reports, September 2022, Elsevier

    Dr Herman Wildrik Barkema

37. 
    Invited review: Selective use of antimicrobials in dairy cattle at drying-off

    Article • Journal of Dairy Science, September 2022, American Dairy Science Association

    Dr Herman Wildrik Barkema

38. 
    lncRNA–miRNA–mRNA ceRNA Network Involved in Sheep Prolificacy: An Integrated Approach

    Article • Genes, July 2022, MDPI AG

    Dr Herman Wildrik Barkema

39. 
    Use of uncoated magnetic beads to capture Mycobacterium smegmatis and Mycobacterium avium paratuberculosis prior detection by mycobacteriophage D29 and real-time-PCR

    Article • Journal of Microbiological Methods, June 2022, Elsevier

    Dr Herman Wildrik Barkema

40. 
    Nrf2 and NF-κB/NLRP3 inflammasome pathways are involved in Prototheca bovis infections of mouse mammary gland tissue and mammary epithelial cells

    Article • Free Radical Biology and Medicine, May 2022, Elsevier

    Dr Herman Wildrik Barkema

41. 
    Western Canadian dairy farmers' perspectives on the provision of outdoor access for dairy cows and on the perceptions of other stakeholders

    Article • Journal of Dairy Science, May 2022, American Dairy Science Association

    Dr Herman Wildrik Barkema

42. 
    Data considerations for developing deep learning models for dairy applications: A simulation study on mastitis detection

    Article • Computers and Electronics in Agriculture, May 2022, Elsevier

    Dr Herman Wildrik Barkema

43. 
    Economic premiums associated with Mycobacterium avium ssp. paratuberculosis-negative replacement purchases in major dairy-producing regions

    Article • Journal of Dairy Science, April 2022, American Dairy Science Association

    Dr Herman Wildrik Barkema

44. 
    Effect of dry-off management on milking behavior, milk yield, and somatic cell count of dairy cows milked in automated milking systems

    Article • Journal of Dairy Science, April 2022, American Dairy Science Association

    Dr Herman Wildrik Barkema

45. 
    Tenofovir disoproxil fumarate therapy to prevent hepatitis B virus vertical transmission—A review of maternal and infant outcomes

    Article • Liver International, March 2022, Wiley

    Dr Herman Wildrik Barkema

46. 
    Antimicrobial resistance (AMR) in COVID-19 patients: a systematic review and meta-analysis (November 2019–June 2021)

    Article • Antimicrobial Resistance and Infection Control, March 2022, Springer Science + Business Media

    Dr Herman Wildrik Barkema

47. 
    Disability-adjusted life years (DALYs) due to the direct health impact of COVID-19 in India, 2020

    Article • Scientific Reports, February 2022, Springer Science + Business Media

    Dr Herman Wildrik Barkema

48. 
    Canadian Dairy Network for Antimicrobial Stewardship and Resistance (CaDNetASR): An On-Farm Surveillance System

    Article • Frontiers in Veterinary Science, January 2022, Frontiers

    Dr Herman Wildrik Barkema

49. 
    Multi-Omics Integration and Network Analysis Reveal Potential Hub Genes and Genetic Mechanisms Regulating Bovine Mastitis

    Article • Current Issues in Molecular Biology, January 2022, MDPI AG

    Dr Herman Wildrik Barkema

50. 
    Crohn’s disease therapeutic dietary intervention (CD-TDI): study protocol for a randomised controlled trial

    Article • BMJ Open Gastroenterology, January 2022, BMJ

    Dr Herman Wildrik Barkema

51. 
    Mastitis detection with recurrent neural networks in farms using automated milking systems

    Article • Computers and Electronics in Agriculture, January 2022, Elsevier

    Dr Herman Wildrik Barkema

52. 
    Differential Co-Expression Network Analysis Reveals Key Hub-High Traffic Genes as Potential Therapeutic Targets for COVID-19 Pandemic

    Article • Frontiers in Immunology, December 2021, Frontiers

    Dr Herman Wildrik Barkema

53. 
    Understanding Farmers' Behavior and Their Decision-Making Process in the Context of Cattle Diseases: A Review of Theories and Approaches

    Article • Frontiers in Veterinary Science, December 2021, Frontiers

    Dr Herman Wildrik Barkema

54. 
    Meta-analysis and adjusted estimation of COVID-19 case fatality risk in India and its association with the underlying comorbidities

    Article • One Health, December 2021, Elsevier

    Dr Herman Wildrik Barkema

55. 
    Prototheca spp. induce an inflammatory response via mtROS-mediated activation of NF-κB and NLRP3 inflammasome pathways in bovine mammary epithelial cell cultures

    Article • Veterinary Research, December 2021, Springer Science + Business Media

    Dr Herman Wildrik Barkema

56. 
    Cross-sectional study of antimicrobial use and treatment decision for preweaning Canadian dairy calves

    Article • JDS Communications, November 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

57. 
    Knowledge Gaps in the Understanding of Antimicrobial Resistance in Canada

    Article • Frontiers in Public Health, October 2021, Frontiers

    Dr Herman Wildrik Barkema

58. 
    Integrated Network Analysis to Identify Key Modules and Potential Hub Genes Involved in Bovine Respiratory Disease: A Systems Biology Approach

    Article • Frontiers in Genetics, October 2021, Frontiers

    Dr Herman Wildrik Barkema

59. 
    Perspectives of Western Canadian dairy farmers on providing outdoor access for dairy cows

    Article • Journal of Dairy Science, September 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

60. 
    Predicting sensitivity of repeated environmental sampling for Mycobacterium avium subsp. paratuberculosis in dairy herds using a Bayesian latent class model

    Article • The Veterinary Journal, September 2021, Elsevier

    Dr Herman Wildrik Barkema

61. 
    Omics Multi-Layers Networks Provide Novel Mechanistic and Functional Insights Into Fat Storage and Lipid Metabolism in Poultry

    Article • Frontiers in Genetics, July 2021, Frontiers

    Dr Herman Wildrik Barkema

62. 
    Herd health and production management visits on Canadian dairy cattle farms: Structure, goals, and topics discussed

    Article • Journal of Dairy Science, July 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

63. 
    Effects of different culture media on growth of Treponema spp. isolated from digital dermatitis

    Article • Anaerobe, June 2021, Elsevier

    Dr Herman Wildrik Barkema

64. 
    Non-aureus Staphylococci and Bovine Udder Health: Current Understanding and Knowledge Gaps

    Article • Frontiers in Veterinary Science, April 2021, Frontiers

    Dr Herman Wildrik Barkema

65. 
    Estimation of the value of Johne’s disease (paratuberculosis) control to Canadian dairy producers

    Article • Preventive Veterinary Medicine, April 2021, Elsevier

    Dr Herman Wildrik Barkema

66. 
    Economic losses due to Johne's disease (paratuberculosis) in dairy cattle

    Article • Journal of Dairy Science, March 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

67. 
    Invited review: Bovine leukemia virus—Transmission, control, and eradication

    Article • Journal of Dairy Science, March 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

68. 
    Corrigendum: Effectiveness and Economic Viability of Johne's Disease (Paratuberculosis) Control Practices in Dairy Herds

    Article • Frontiers in Veterinary Science, February 2021, Frontiers

    Dr Herman Wildrik Barkema

69. 
    Associations of freestall design and cleanliness with cow lying behavior, hygiene, lameness, and risk of high somatic cell count

    Article • Journal of Dairy Science, February 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

70. 
    Genetic analysis of pathogen-specific intramammary infections in dairy cows

    Article • Journal of Dairy Science, February 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

71. 
    Dietary patterns, food groups and nutrients in Crohn’s disease: associations with gut and systemic inflammation

    Article • Scientific Reports, January 2021, Springer Science + Business Media

    Dr Herman Wildrik Barkema

72. 
    Effectiveness and Economic Viability of Johne's Disease (Paratuberculosis) Control Practices in Dairy Herds

    Article • Frontiers in Veterinary Science, January 2021, Frontiers

    Dr Herman Wildrik Barkema

73. 
    Genetic diversity and molecular epidemiology of outbreaks of Klebsiella pneumoniae mastitis on two large Chinese dairy farms

    Article • Journal of Dairy Science, January 2021, American Dairy Science Association

    Dr Herman Wildrik Barkema

74. 
    In vitro immune responses of bovine mammary epithelial cells induced by Escherichia coli, with multidrug resistant extended-spectrum β-lactamase, isolated from mastitic milk

    Article • Microbial Pathogenesis, December 2020, Elsevier

    Dr Herman Wildrik Barkema

75. 
    Association between lameness risk assessment and lameness and foot lesion prevalence on dairy farms in Alberta, Canada

    Article • Journal of Dairy Science, December 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

76. 
    Communication preferences and social media engagement among Canadian dairy producers

    Article • Journal of Dairy Science, December 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

77. 
    Invited review: Academic and applied approach to evaluating longevity in dairy cows

    Article • Journal of Dairy Science, December 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

78. 
    Prevalence of antimicrobial resistance genes and its association with restricted antimicrobial use in food-producing animals: a systematic review and meta-analysis

    Article • Journal of Antimicrobial Chemotherapy, November 2020, Oxford University Press (OUP)

    Dr Herman Wildrik Barkema

79. 
    167 Addition of garlic powder at low doses stimulated mineral consumption in feedlot cattle

    Article • Journal of Animal Science, November 2020, Oxford University Press (OUP)

    Dr Herman Wildrik Barkema

80. 
    Critically important antimicrobials are generally not needed to treat nonsevere clinical mastitis in lactating dairy cows: Results from a network meta-analysis

    Article • Journal of Dairy Science, November 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

81. 
    Real‐world clinical and virological outcomes in a retrospective multiethnic cohort study of 341 untreated and tenofovir disoproxil fumarate‐treated chronic hepatitis B pregnant patients in North America

    Article • Alimentary Pharmacology & Therapeutics, October 2020, Wiley

    Dr Herman Wildrik Barkema

82. 
    Public health interventions slowed but did not halt the spread of COVID‐19 in India

    Article • Transboundary and Emerging Diseases, October 2020, Wiley

    Dr Herman Wildrik Barkema

83. 
    Treponema spp. Isolated from Bovine Digital Dermatitis Display Different Pathogenicity in a Murine Abscess Model

    Article • Microorganisms, September 2020, MDPI AG

    Dr Herman Wildrik Barkema

84. 
    Effects of employer management on employee recruitment, satisfaction, engagement, and retention on large US dairy farms

    Article • Journal of Dairy Science, September 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

85. 
    Selenomethionine Suppressed TLR4/NF-κB Pathway by Activating Selenoprotein S to Alleviate ESBL Escherichia coli-Induced Inflammation in Bovine Mammary Epithelial Cells and Macrophages

    Article • Frontiers in Microbiology, July 2020, Frontiers

    Dr Herman Wildrik Barkema

86. 
    Genomic Analysis of Bovine Staphylococcus aureus Isolates from Milk To Elucidate Diversity and Determine the Distributions of Antimicrobial and Virulence Genes and Their Association with Mastitis

    Article • mSystems, July 2020, ASM Journals

    Dr Herman Wildrik Barkema

87. 
    Co-Occurrence of Plasmid-Mediated Colistin Resistance (mcr-1) and Extended-Spectrum β-Lactamase Encoding Genes in Escherichia coli from Bovine Mastitic Milk in China

    Article • Microbial Drug Resistance, June 2020, Mary Ann Liebert Inc

    Dr Herman Wildrik Barkema

88. 
    Cathelicidins Mitigate Staphylococcus aureus Mastitis and Reduce Bacterial Invasion in Murine Mammary Epithelium

    Article • Infection and Immunity, April 2020, ASM Journals

    Dr Herman Wildrik Barkema

89. 
    Composition and co-occurrence patterns of the microbiota of different niches of the bovine mammary gland: potential associations with mastitis susceptibility, udder inflammation, and teat-end hyperkeratosis

    Article • Animal Microbiome, April 2020, Springer Science + Business Media

    Dr Herman Wildrik Barkema

90. 
    Canadian National Dairy Study: Describing Canadian dairy producer practices and perceptions surrounding cull cow management

    Article • Journal of Dairy Science, April 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

91. 
    Klebsiella pneumoniae isolated from bovine mastitis is cytopathogenic for bovine mammary epithelial cells

    Article • Journal of Dairy Science, April 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

92. 
    Short communication: Describing mortality and euthanasia practices on Canadian dairy farms

    Article • Journal of Dairy Science, April 2020, American Dairy Science Association

    Dr Herman Wildrik Barkema

93. 
    Murine and Human Cathelicidins Contribute Differently to Hallmarks of Mastitis Induced by Pathogenic Prototheca bovis Algae

    Article • Frontiers in Cellular and Infection Microbiology, February 2020, Frontiers

    Dr Herman Wildrik Barkema

94. 
    Prototheca zopfii genotype II induces mitochondrial apoptosis in models of bovine mastitis

    Article • Scientific Reports, January 2020, Springer Science + Business Media

    Dr Herman Wildrik Barkema

95. 
    ESBL-Producing Escherichia coli from Bovine Mastitis Induced Apoptosis of Bovine Mammary Epithelial Cells Via Alteration of ROS/MMP/bax/bcl-2 Signaling Pathway

    Article • Pakistan Veterinary Journal, January 2020, Pakistan Veterinary Journal

    Dr Herman Wildrik Barkema

96. 
    Epidemiology, global prevalence and economics of infection.

    Article • January 2020, CABI Publishing

    Dr Herman Wildrik Barkema

97. 
    Prevalence of Potential Virulence Genes in Klebsiella spp. Isolated from Cows with Clinical Mastitis on Large Chinese Dairy Farms

    Article • Foodborne Pathogens and Disease, December 2019, Mary Ann Liebert Inc

    Dr Herman Wildrik Barkema

98. 
    Bacterial concentrations in bedding and their association with dairy cow hygiene and milk quality

    Article • animal, November 2019, Cambridge University Press

    Dr Herman Wildrik Barkema

99. 
    Canadian dairy farmers' perception of the efficacy of biosecurity practices

    Article • Journal of Dairy Science, November 2019, American Dairy Science Association

    Dr Herman Wildrik Barkema

100. 
     Biosecurity and herd health management practices on Canadian dairy farms

     Article • Journal of Dairy Science, October 2019, American Dairy Science Association

     Dr Herman Wildrik Barkema

101. 
     Synthetic cathelicidin LL-37 reduces Mycobacterium avium subsp. paratuberculosis internalization and pro-inflammatory cytokines in macrophages

     Article • Cell and Tissue Research, September 2019, Springer Science + Business Media

     Dr Herman Wildrik Barkema

102. 
     Prevalence, fecal egg counts, and species identification of gastrointestinal nematodes in replacement dairy heifers in Canada

     Article • Journal of Dairy Science, September 2019, American Dairy Science Association

     Dr Herman Wildrik Barkema

103. 
     Quantifying transmission of Mycobacterium avium subsp. paratuberculosis among group-housed dairy calves

     Article • Veterinary Research, August 2019, Springer Science + Business Media

     Dr Herman Wildrik Barkema

104. 
     Oxytetracycline reduces inflammation and treponeme burden whereas vitamin D3 promotes β-defensin expression in bovine infectious digital dermatitis

     Article • Cell and Tissue Research, August 2019, Springer Science + Business Media

     Dr Herman Wildrik Barkema

105. 
     Association of Levels of Specialized Care With Risk of Premature Mortality in Patients With Epilepsy

     Article • JAMA Neurology, August 2019, American Medical Association (AMA)

     Dr Herman Wildrik Barkema

106. 
     Staphylococcus debuckii sp. nov., a coagulase-negative species from bovine milk

     Article • INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, August 2019, Society for General Microbiology

     Dr Herman Wildrik Barkema

107. 
     Comparison of different approaches to antibiotic restriction in food-producing animals: stratified results from a systematic review and meta-analysis

     Article • BMJ Global Health, August 2019, BMJ

     Dr Herman Wildrik Barkema

108. 
     Control of paratuberculosis: who, why and how. A review of 48 countries

     Article • BMC Veterinary Research, June 2019, Springer Science + Business Media

     Dr Herman Wildrik Barkema, Jacobus de Waard

109. 
     Examination of unintended consequences of antibiotic use restrictions in food-producing animals: Sub-analysis of a systematic review

     Article • One Health, June 2019, Elsevier

     Dr Herman Wildrik Barkema

110. 
     Chlorogenic acid promotes the Nrf2/HO-1 anti-oxidative pathway by activating p21Waf1/Cip1 to resist dexamethasone-induced apoptosis in osteoblastic cells

     Article • Free Radical Biology and Medicine, June 2019, Elsevier

     Dr Herman Wildrik Barkema

111. 
     Factors associated with dairy farmers' satisfaction and preparedness to adopt recommendations after veterinary herd health visits

     Article • Journal of Dairy Science, May 2019, American Dairy Science Association

     Dr Herman Wildrik Barkema

112. 
     Escherichia coli contamination of rural well water in Alberta, Canada is associated with soil properties, density of livestock and precipitation

     Article • Canadian Water Resources Journal / Revue canadienne des ressources hydriques, April 2019, Taylor & Francis

     Norman Neumann, Dr Herman Wildrik Barkema

113. 
     A review of paratuberculosis in dairy herds — Part 1: Epidemiology

     Article • The Veterinary Journal, April 2019, Elsevier

     Dr Herman Wildrik Barkema

114. 
     A review of paratuberculosis in dairy herds — Part 2: On-farm control

     Article • The Veterinary Journal, April 2019, Elsevier

     Dr Herman Wildrik Barkema

115. 
     Comprehensive Virulence Gene Profiling of Bovine Non-aureus Staphylococci Based on Whole-Genome Sequencing Data

     Article • mSystems, March 2019, ASM Journals

     Dr Herman Wildrik Barkema

116. 
     Effect of footbath protocols for prevention and treatment of digital dermatitis in dairy cattle: A systematic review and network meta-analysis

     Article • Preventive Veterinary Medicine, March 2019, Elsevier

     Dr Herman Wildrik Barkema

117. 
     Adherent/invasive capacities of bovine-associated Aerococcus viridans contribute to pathogenesis of acute mastitis in a murine model

     Article • Veterinary Microbiology, March 2019, Elsevier

     Dr Herman Wildrik Barkema

118. 
     Antimicrobial resistance profiles of 5 common bovine mastitis pathogens in large Chinese dairy herds

     Article • Journal of Dairy Science, March 2019, American Dairy Science Association

     Dr Herman Wildrik Barkema

119. 
     Prototheca zopfii Genotype II induces mitochondrial apoptosis in models of bovine mastitis

     Article • February 2019, Cold Spring Harbor Laboratory Press

     Dr Herman Wildrik Barkema

120. 
     Cytokines and Chemokines in Pediatric Appendicitis: A Multiplex Analysis of Inflammatory Protein Mediators

     Article • Mediators of Inflammation, February 2019, Hindawi Publishing Corporation

     Dr Graham Cameron Thompson, Dr Herman Wildrik Barkema

121. 
     Molecular epidemiology and distribution of antimicrobial resistance genes of Staphylococcus species isolated from Chinese dairy cows with clinical mastitis

     Article • Journal of Dairy Science, February 2019, American Dairy Science Association

     Dr Herman Wildrik Barkema

122. 
     Prevalence, Genetic Diversity and Antimicrobial Resistance of Proteus mirabilis Isolated from Dogs Hospitalized in Beijing

     Article • Pakistan Veterinary Journal, January 2019, Pakistan Veterinary Journal

     Dr Herman Wildrik Barkema

123. 
     Genetic analysis of subclinical mastitis in early lactation of heifers using both linear and threshold models

     Article • Journal of Dairy Science, December 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

124. 
     Invited review: Microbiota of the bovine udder: Contributing factors and potential implications for udder health and mastitis susceptibility

     Article • Journal of Dairy Science, December 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

125. 
     Prevalence of Mycobacterium avium ssp. paratuberculosis infections in Canadian dairy herds

     Article • Journal of Dairy Science, December 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

126. 
     Association of bovine major histocompatibility complex (BoLA) gene polymorphism with colostrum and milk microbiota of dairy cows during the first week of lactation

     Article • Microbiome, November 2018, Springer Science + Business Media

     Dr Herman Wildrik Barkema

127. 
     Characteristics of Escherichia coli Isolated from Bovine Mastitis Exposed to Subminimum Inhibitory Concentrations of Cefalotin or Ceftazidime

     Article • BioMed Research International, November 2018, Hindawi Publishing Corporation

     Dr Herman Wildrik Barkema

128. 
     Canadian National Dairy Study: Heifer calf management

     Article • Journal of Dairy Science, November 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

129. 
     Clinical communication patterns of veterinary practitioners during dairy herd health and production management farm visits

     Article • Journal of Dairy Science, November 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

130. 
     Composition of the teat canal and intramammary microbiota of dairy cows subjected to antimicrobial dry cow therapy and internal teat sealant

     Article • Journal of Dairy Science, November 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

131. 
     Producer experience with transitioning to automatic milking: Cow training, challenges, and effect on quality of life

     Article • Journal of Dairy Science, October 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

132. 
     Environmental sample characteristics and herd size associated with decreased herd-level prevalence of Mycobacterium avium ssp. paratuberculosis

     Article • Journal of Dairy Science, September 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

133. 
     Corrigendum to “Evaluation by employees of employee management on large US dairy farms” (J. Dairy Sci. 101:7450–7462)

     Article • Journal of Dairy Science, September 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

134. 
     Antimicrobial resistance in non-aureus staphylococci isolated from milk is associated with systemic but not intramammary administration of antimicrobials in dairy cattle

     Article • Journal of Dairy Science, August 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

135. 
     Comparison of fecal pooling strategies for detection of Mycobacterium avium ssp. paratuberculosis in cattle

     Article • Journal of Dairy Science, August 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

136. 
     Evaluation by employees of employee management on large US dairy farms

     Article • Journal of Dairy Science, August 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

137. 
     Effects of freezing on ability to detect Mycobacterium avium subsp. paratuberculosis from bovine tissues following culture

     Article • Journal of Veterinary Diagnostic Investigation, July 2018, SAGE Publications

     Dr Herman Wildrik Barkema

138. 
     A Differential Innate Immune Response in Active and Chronic Stages of Bovine Infectious Digital Dermatitis

     Article • Frontiers in Microbiology, July 2018, Frontiers

     Dr Herman Wildrik Barkema

139. 
     Herd-Level Mastitis-Associated Costs on Canadian Dairy Farms

     Article • Frontiers in Veterinary Science, May 2018, Frontiers

     Dr Herman Wildrik Barkema

140. 
     DISCONTOOLS supplement: Current research gaps for advancing control of infectious diseases in production animals

     Article • Transboundary and Emerging Diseases, May 2018, Wiley

     Dr Herman Wildrik Barkema

141. 
     Impact of automatic milking systems on dairy cattle producers’ reports of milking labour management, milk production and milk quality

     Article • animal, April 2018, Cambridge University Press

     Dr Herman Wildrik Barkema

142. 
     Udder health in Canadian dairy heifers during early lactation

     Article • Journal of Dairy Science, April 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

143. 
     Virulence gene profiles: alpha-hemolysin and clonal diversity in Staphylococcus aureus isolates from bovine clinical mastitis in China

     Article • BMC Veterinary Research, March 2018, Springer Science + Business Media

     Dr Herman Wildrik Barkema

144. 
     Invited review: Incidence, risk factors, and effects of clinical mastitis recurrence in dairy cows

     Article • Journal of Dairy Science, March 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

145. 
     Invited review: Effectiveness of precalving treatment on postcalving udder health in nulliparous dairy heifers: A systematic review and meta-analysis

     Article • Journal of Dairy Science, March 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

146. 
     Short communication: Evaluation of 5 different ELISA for the detection of bovine leukemia virus antibodies

     Article • Journal of Dairy Science, March 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

147. 
     Comparison of effects of routine topical treatments in the milking parlor on digital dermatitis lesions

     Article • Journal of Dairy Science, March 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

148. 
     Symposium review: Novel strategies to genetically improve mastitis resistance in dairy cattle

     Article • Journal of Dairy Science, March 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

149. 
     Canadian National Dairy Study: Herd-level milk quality

     Article • Journal of Dairy Science, March 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

150. 
     Prevalence and Genetic Basis of Antimicrobial Resistance in Non-aureus Staphylococci Isolated from Canadian Dairy Herds

     Article • Frontiers in Microbiology, February 2018, Frontiers

     Dr Herman Wildrik Barkema

151. 
     Host defense cathelicidins in cattle: types, production, bioactive functions and potential therapeutic and diagnostic applications

     Article • International Journal of Antimicrobial Agents, February 2018, Elsevier

     Dr Herman Wildrik Barkema

152. 
     Quantifying fecal shedding of Mycobacterium avium ssp. paratuberculosis from calves after experimental infection and exposure

     Article • Journal of Dairy Science, February 2018, American Dairy Science Association

     Dr Herman Wildrik Barkema

153. 
     Action cameras and the Roter interaction analysis system to assess veterinarian-producer interactions in a dairy setting

     Article • Veterinary Record, December 2017, BMJ

     Dr Herman Wildrik Barkema

154. 
     Producer estimates of prevalence and perceived importance of lameness in dairy herds with tiestalls, freestalls, and automated milking systems

     Article • Journal of Dairy Science, December 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

155. 
     Comparison of treatment records and inventory of empty drug containers to quantify antimicrobial usage in dairy herds

     Article • Journal of Dairy Science, December 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

156. 
     Missing pieces of the puzzle to effectively control digital dermatitis

     Article • Transboundary and Emerging Diseases, November 2017, Wiley

     Dr Herman Wildrik Barkema

157. 
     Restricting the use of antibiotics in food-producing animals and its associations with antibiotic resistance in food-producing animals and human beings: a systematic review and meta-analysis

     Article • The Lancet Planetary Health, November 2017, Elsevier

     Dr Herman Wildrik Barkema

158. 
     Prevalence of digital dermatitis in young stock in Alberta, Canada, using pen walks

     Article • Journal of Dairy Science, November 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

159. 
     Short communication: Molecular characteristics, antimicrobial susceptibility, and pathogenicity of clinical Nocardia cyriacigeorgica isolates from an outbreak of bovine mastitis

     Article • Journal of Dairy Science, October 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

160. 
     Knowledge gaps that hamper prevention and control of Mycobacterium avium subspecies paratuberculosis infection

     Article • Transboundary and Emerging Diseases, September 2017, Wiley

     Dr Herman Wildrik Barkema, John Bannantine

161. 
     Comparison of five diagnostic tests for Giardia duodenalis in fecal samples from young dogs

     Article • Veterinary Parasitology, September 2017, Elsevier

     Dr Herman Wildrik Barkema

162. 
     Effects of changing freestall area on lameness, lying time, and leg injuries on dairy farms in Alberta, Canada

     Article • Journal of Dairy Science, August 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

163. 
     Total coliform and Escherichia coli contamination in rural well water: analysis for passive surveillance

     Article • Journal of Water and Health, July 2017, IWA Publishing

     Dr Herman Wildrik Barkema

164. 
     Prevalence of non- aureus staphylococci species causing intramammary infections in Canadian dairy herds

     Article • Journal of Dairy Science, July 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

165. 
     The NOD2 -Smoking Interaction in Crohn's Disease is likely Specific to the 1007 fs Mutation and may be Explained by Age at Diagnosis: A Meta-Analysis and Case-Only Study

     Article • EBioMedicine, July 2017, Elsevier

     Dr Herman Wildrik Barkema

166. 
     Distribution of non- aureus staphylococci species in udder quarters with low and high somatic cell count, and clinical mastitis

     Article • Journal of Dairy Science, July 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

167. 
     Comparison of the efficacy of a commercial footbath product with copper sulfate for the control of digital dermatitis

     Article • Journal of Dairy Science, July 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

168. 
     Bacteriocins of Non-aureus Staphylococci Isolated from Bovine Milk

     Article • Applied and Environmental Microbiology, June 2017, ASM Journals

     Dr Herman Wildrik Barkema

169. 
     A serologic survey of Mycoplasma spp. in farmed bison (Bison bison) herds in western Canada

     Article • Journal of Veterinary Diagnostic Investigation, June 2017, SAGE Publications

     Dr Herman Wildrik Barkema, muhammad suleman

170. 
     Bovine respiratory disease in pre-weaned dairy calves: Are current preventative strategies good enough?

     Article • The Veterinary Journal, June 2017, Elsevier

     Dr Herman Wildrik Barkema

171. 
     Incidence of clinical mastitis and distribution of pathogens on large Chinese dairy farms

     Article • Journal of Dairy Science, June 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

172. 
     Crossover Subsets of CD4+ T Lymphocytes in the Intestinal Lamina Propria of Patients with Crohn’s Disease and Ulcerative Colitis

     Article • Digestive Diseases and Sciences, June 2017, Springer Science + Business Media

     Dr Herman Wildrik Barkema

173. 
     Clinical presentation, prevalence, and risk factors associated with Mycoplasma bovis-associated disease in farmed bison (Bison bison) herds in western Canada

     Article • Journal of the American Veterinary Medical Association, May 2017, American Veterinary Medical Association (AVMA)

     Dr Herman Wildrik Barkema

174. 
     Invited review: Determinants of farmers' adoption of management-based strategies for infectious disease prevention and control

     Article • Journal of Dairy Science, May 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

175. 
     Fecal shedding and tissue infections demonstrate transmission of Mycobacterium avium subsp. paratuberculosis in group-housed dairy calves

     Article • Veterinary Research, April 2017, Springer Science + Business Media

     Dr Herman Wildrik Barkema

176. 
     Lessons learned from the 2013 Calgary flood: Assessing risk of drinking water well contamination

     Article • Applied Geography, March 2017, Elsevier

     Dr Herman Wildrik Barkema

177. 
     Spatial-temporal cluster analysis of fatal Clostridium chauvoei cases among cattle in Styria, Austria between 1986 and 2013

     Article • Preventive Veterinary Medicine, March 2017, Elsevier

     Dr Herman Wildrik Barkema

178. 
     Identification of bovine-associated coagulase-negative staphylococci by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry using a direct transfer protocol

     Article • Journal of Dairy Science, March 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

179. 
     Effect of transitioning to automatic milking systems on producers' perceptions of farm management and cow health in the Canadian dairy industry

     Article • Journal of Dairy Science, March 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

180. 
     Development of a single-dose recombinant CAMP factor entrapping poly(lactide-co-glycolide) microspheres-based vaccine against Streptococcus agalactiae

     Article • Vaccine, March 2017, Elsevier

     Dr Herman Wildrik Barkema

181. 
     Effectiveness of a standardized footbath protocol for prevention of digital dermatitis

     Article • Journal of Dairy Science, February 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

182. 
     Validation of the M-stage scoring system for digital dermatitis on dairy cows in the milking parlor

     Article • Journal of Dairy Science, February 2017, American Dairy Science Association

     Dr Herman Wildrik Barkema

183. 
     Comprehensive Phylogenetic Analysis of Bovine Non-aureus Staphylococci Species Based on Whole-Genome Sequencing

     Article • Frontiers in Microbiology, December 2016, Frontiers

     Dr Herman Wildrik Barkema

184. 
     Identifying management and disease priorities of Canadian dairy industry stakeholders

     Article • Journal of Dairy Science, December 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

185. 
     Dairy farmers’ perceptions toward the implementation of on-farm Johne’s disease prevention and control strategies

     Article • Journal of Dairy Science, November 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

186. 
     Relative frequency of 4 major strain types of Mycobacterium avium ssp. paratuberculosis in Canadian dairy herds using a novel single nucleotide polymorphism-based polymerase chain reaction

     Article • Journal of Dairy Science, October 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

187. 
     0116 Associations of hygiene and lying behavior with the risk of elevated somatic cell count and lameness

     Article • Journal of Animal Science, October 2016, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

188. 
     0124 Associations of cow-level factors with the risk of poor hygiene

     Article • Journal of Animal Science, October 2016, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

189. 
     Profiles of Lamina Propria T Helper Cell Subsets Discriminate Between Ulcerative Colitis and Crohnʼs Disease

     Article • Inflammatory Bowel Diseases, August 2016, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

190. 
     Prevalence and distribution of foot lesions in dairy cattle in Alberta, Canada

     Article • Journal of Dairy Science, August 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

191. 
     Risk factors for Mycoplasma bovis-associated disease in farmed bison (Bison bison) herds in western Canada: A case-control study

     Article • Preventive Veterinary Medicine, July 2016, Elsevier

     Dr Herman Wildrik Barkema

192. 
     Novel CD8+ T-Cell Subsets Demonstrating Plasticity in Patients with Inflammatory Bowel Disease

     Article • Inflammatory Bowel Diseases, July 2016, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

193. 
     Dairy farms testing positive for Mycobacterium avium ssp. paratuberculosis have poorer hygiene practices and are less cautious when purchasing cattle than test-negative herds

     Article • Journal of Dairy Science, June 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

194. 
     Ulcerative Colitis Patients With Clostridium difficile are at Increased Risk of Death, Colectomy, and Postoperative Complications: A Population-Based Inception Cohort Study

     Article • The American Journal of Gastroenterology, April 2016, Nature

     Dr Herman Wildrik Barkema

195. 
     1074 The Concordance Between Disease Activity and Prevalence of Th1 Subsets in Patients With Inflammatory Bowel Disease

     Article • Gastroenterology, April 2016, Elsevier

     Dr Herman Wildrik Barkema

196. 
     Short communication: Evaluation of sampling socks for detection of Mycobacterium avium ssp. paratuberculosis on dairy farms

     Article • Journal of Dairy Science, April 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

197. 
     Harm reduction as a complex adaptive system: A dynamic framework for analyzing Tanzanian policies concerning heroin use

     Article • International Journal of Drug Policy, April 2016, Elsevier

     Dr Herman Wildrik Barkema

198. 
     The Features of Fecal and Ileal Mucosa-Associated Microbiota in Dairy Calves during Early Infection with Mycobacterium avium Subspecies paratuberculosis

     Article • Frontiers in Microbiology, March 2016, Frontiers

     Dr Herman Wildrik Barkema

199. 
     Short communication: Herd-level prevalence of Mycobacterium avium ssp. paratuberculosis is not associated with participation in a voluntary Alberta Johne’s disease control program

     Article • Journal of Dairy Science, March 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

200. 
     Associations between lying behavior and lameness in Canadian Holstein-Friesian cows housed in freestall barns

     Article • Journal of Dairy Science, March 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

201. 
     Genome-Wide Diversity and Phylogeography of Mycobacterium avium subsp. paratuberculosis in Canadian Dairy Cattle

     Article • PLoS ONE, February 2016, PLOS

     Kapil Tahlan, Dr Herman Wildrik Barkema

202. 
     Incidence rate of pathogen-specific clinical mastitis on conventional and organic Canadian dairy farms

     Article • Journal of Dairy Science, February 2016, American Dairy Science Association

     Dr Herman Wildrik Barkema

203. 
     Factors affecting management changes on farms participating in a Johne’s disease control program

     Article • Journal of Dairy Science, November 2015, American Dairy Science Association

     Dr Herman Wildrik Barkema

204. 
     Invited review: Changes in the dairy industry affecting dairy cattle health and welfare

     Article • Journal of Dairy Science, November 2015, American Dairy Science Association

     Dr Herman Wildrik Barkema

205. 
     Factors associated with participation of Alberta dairy farmers in a voluntary, management-based Johne’s disease control program

     Article • Journal of Dairy Science, November 2015, American Dairy Science Association

     Dr Herman Wildrik Barkema

206. 
     Calf management practices and associations with herd-level morbidity and mortality on beef cow-calf operations

     Article • animal, October 2015, Cambridge University Press

     Dr Herman Wildrik Barkema

207. 
     Susceptibility to and diagnosis of Mycobacterium avium subspecies paratuberculosis infection in dairy calves: A review

     Article • Preventive Veterinary Medicine, October 2015, Elsevier

     Dr Herman Wildrik Barkema

208. 
     Prevalence of lameness and associated risk factors in Canadian Holstein-Friesian cows housed in freestall barns

     Article • Journal of Dairy Science, October 2015, American Dairy Science Association

     Dr Herman Wildrik Barkema

209. 
     Age at Diagnosis of Crohnʼs Disease May Explain NOD2-Smoking Interactions

     Article • The American Journal of Gastroenterology, October 2015, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

210. 
     The Interaction Between NOD2 and Smoking Is Specific to the 1007fs SNP of the NOD2 Gene in Crohnʼs Disease: A Systematic Review and Meta-analysis

     Article • The American Journal of Gastroenterology, October 2015, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

211. 
     Calves shedding Mycobacterium avium subspecies paratuberculosis are common on infected dairy farms

     Article • Veterinary Research, June 2015, Springer Science + Business Media

     Dr Herman Wildrik Barkema

212. 
     Technical note: Accuracy of an ear tag-attached accelerometer to monitor rumination and feeding behavior in feedlot cattle1

     Article • Journal of Animal Science, June 2015, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

213. 
     Su1323 Patients With Crohn's Disease Who Never Smoke Are More Likely to Carry NOD2 Variants: A Case-Only NOD2-Smoking Interaction Study

     Article • Gastroenterology, April 2015, Elsevier

     Dr Herman Wildrik Barkema

214. 
     Su1298 Early Detection of Clostridium difficile Infection Impacts Disease Related Outcomes in Patients With Ulcerative Colitis Patients: A Population-Based Inception Cohort Study

     Article • Gastroenterology, April 2015, Elsevier

     Dr Herman Wildrik Barkema

215. 
     Evaluating the cost implications of a radio frequency identification feeding system for early detection of bovine respiratory disease in feedlot cattle

     Article • Preventive Veterinary Medicine, March 2015, Elsevier

     Dr Herman Wildrik Barkema

216. 
     Mediation analysis to estimate direct and indirect milk losses due to clinical mastitis in dairy cattle

     Article • Preventive Veterinary Medicine, March 2015, Elsevier

     Dr Herman Wildrik Barkema

217. 
     Intrapartum Corticosteroid use Significantly Increases the Risk of Gestational Diabetes in Women with Inflammatory Bowel Disease

     Article • Journal of Crohn s and Colitis, February 2015, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

218. 
     Living with Inflammatory Bowel Disease: A Crohn’s and Colitis Canada Survey

     Article • Canadian Journal of Gastroenterology and Hepatology, January 2015, Hindawi Publishing Corporation

     Dr Herman Wildrik Barkema

219. 
     Limitations of variable number of tandem repeat typing identified through whole genome sequencing of Mycobacterium avium subsp. paratuberculosis on a national and herd level

     Article • BMC Genomics, January 2015, Springer Science + Business Media

     Dr Herman Wildrik Barkema

220. 
     Sampling location, herd size, and season influence Mycobacterium avium ssp. paratuberculosis environmental culture results

     Article • Journal of Dairy Science, January 2015, American Dairy Science Association

     Dr Herman Wildrik Barkema

221. 
     Feeding behavior as an early predictor of bovine respiratory disease in North American feedlot systems1

     Article • Journal of Animal Science, January 2015, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

222. 
     Feeding behavior as an early predictor of bovine respiratory disease in North American feedlot systems

     Article • Journal of Animal Science, November 2014, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

223. 
     Metabolomic Profiling in Cattle Experimentally Infected with Mycobacterium avium subsp. paratuberculosis

     Article • PLoS ONE, November 2014, PLOS

     Dr Herman Wildrik Barkema

224. 
     Colorectal Cancer Surveillance in Patients with Inflammatory Bowel Disease and Primary Sclerosing Cholangitis

     Article • Inflammatory Bowel Diseases, November 2014, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

225. 
     Occurrence of Mycobacterium avium subspecies paratuberculosis and Neospora caninum in Alberta cow-calf operations

     Article • Preventive Veterinary Medicine, November 2014, Elsevier

     Dr Herman Wildrik Barkema

226. 
     Funding a Smoking Cessation Program for Crohn’s Disease: An Economic Evaluation

     Article • The American Journal of Gastroenterology, October 2014, Nature

     Dr Herman Wildrik Barkema

227. 
     Gene-expression profiling of calves 6 and 9 months after inoculation with Mycobacterium avium subspecies paratuberculosis

     Article • Veterinary Research, October 2014, Springer Science + Business Media

     Dr Herman Wildrik Barkema

228. 
     Dose-dependent interferon-gamma release in dairy calves experimentally infected with Mycobacterium avium subspecies paratuberculosis

     Article • Veterinary Immunology and Immunopathology, October 2014, Elsevier

     Dr Herman Wildrik Barkema

229. 
     High herd-level prevalence of Mycobacterium avium subspecies paratuberculosis in Western Canadian dairy farms, based on environmental sampling

     Article • Journal of Dairy Science, October 2014, American Dairy Science Association

     Dr Herman Wildrik Barkema

230. 
     C-Reactive Protein and Erythrocyte Sedimentation Rate Do Not Correlate With Disease Activity in Pregnant Women With IBD

     Article • The American Journal of Gastroenterology, October 2014, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

231. 
     Antibody response early after experimental infection with Mycobacterium avium subspecies paratuberculosis in dairy calves

     Article • Journal of Dairy Science, September 2014, American Dairy Science Association

     Dr Herman Wildrik Barkema

232. 
     Shedding patterns of dairy calves experimentally infected with Mycobacterium avium subspecies paratuberculosis

     Article • Veterinary Research, July 2014, Springer Science + Business Media

     Dr Herman Wildrik Barkema

233. 
     Gene expression profiling and putative biomarkers of calves 3 months after infection with Mycobacterium avium subspecies paratuberculosis

     Article • Veterinary Immunology and Immunopathology, July 2014, Elsevier

     Dr Herman Wildrik Barkema

234. 
     Exposure to Ingested Airborne Pollutant Particulate Matter Increases Mucosal Exposure to Bacteria and Induces Early Onset of Inflammation in Neonatal IL-10–Deficient Mice

     Article • Inflammatory Bowel Diseases, July 2014, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

235. 
     A questionnaire-based survey on the uptake and use of cattle vaccines in the UK

     Article • Veterinary Record Open, July 2014, BMJ

     Dr Herman Wildrik Barkema

236. 
     Perturbation of the Human Microbiome as a Contributor to Inflammatory Bowel Disease

     Article • Pathogens, June 2014, MDPI AG

     Dr Herman Wildrik Barkema

237. 
     Relationship between postmilking standing duration and risk of intramammary infection in freestall-housed dairy cows milked 3 times per day

     Article • Journal of Dairy Science, June 2014, American Dairy Science Association

     Dr Herman Wildrik Barkema

238. 
     Su1325 Women With Inflammatory Bowel Disease Are At Higher Risk of Gestational Diabetes: A Novel Finding

     Article • Gastroenterology, May 2014, Elsevier

     Dr Herman Wildrik Barkema

239. 
     Opposing Effects of Smoking in Ulcerative Colitis and Crohnʼs Disease May Be Explained by Differential Effects on Dendritic Cells

     Article • Inflammatory Bowel Diseases, May 2014, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

240. 
     Mo1729 Differential Effect of Cigarette Smoke Extract Modifies CD103 and CXCR3 Expressions of Monocyte-Derived Dendritic Cells From Crohn's Disease and Ulcerative Colitis Patients

     Article • Gastroenterology, May 2014, Elsevier

     Dr Herman Wildrik Barkema

241. 
     Economic evaluation of participation in a voluntary Johne's disease prevention and control program from a farmer's perspective–The Alberta Johne's Disease Initiative

     Article • Journal of Dairy Science, May 2014, American Dairy Science Association

     Dr Herman Wildrik Barkema

242. 
     Phenotypic Features of Crohn's Disease Associated With Failure of Medical Treatment

     Article • Clinical Gastroenterology and Hepatology, March 2014, Elsevier

     Dr Herman Wildrik Barkema

243. 
     Gene-expression profiling of calves 6 and 9 months after inoculation with Mycobacterium avium subspecies paratuberculosis

     Article • Veterinary Research, January 2014, Springer Science + Business Media

     Dr Herman Wildrik Barkema

244. 
     Pathogens at the livestock-wildlife interface in Western Alberta: does transmission route matter?

     Article • Veterinary Research, January 2014, Springer Science + Business Media

     Dr Herman Wildrik Barkema

245. 
     Clostridium difficileInfection Worsens the Prognosis of Ulcerative Colitis

     Article • Canadian Journal of Gastroenterology and Hepatology, January 2014, Hindawi Publishing Corporation

     Dr Herman Wildrik Barkema

246. 
     Evaluation of milk ELISA fordetection of Mycobacterium avium subspecies paratuberculosis indairy herds and association with within-herd prevalence

     Article • Journal of Dairy Science, January 2014, American Dairy Science Association

     Dr Herman Wildrik Barkema

247. 
     Prevalence of and factors associated with hock, knee, and neck injuries on dairy cows in freestall housing in Canada

     Article • Journal of Dairy Science, January 2014, American Dairy Science Association

     Dr Herman Wildrik Barkema

248. 
     Molecular identification and antimicrobial susceptibility of Nocardia spp. isolated from bovine mastitis in Brazil

     Article • Veterinary Microbiology, December 2013, Elsevier

     Dr Herman Wildrik Barkema

249. 
     Improved Short-Sequence-Repeat Genotyping of Mycobacterium avium subsp. paratuberculosis by Using Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry

     Article • Applied and Environmental Microbiology, November 2013, ASM Journals

     Dr Herman Wildrik Barkema

250. 
     Risk of Surgery for Inflammatory Bowel Diseases Has Decreased Over Time: A Systematic Review and Meta-analysis of Population-Based Studies

     Article • Gastroenterology, November 2013, Elsevier

     Dr Herman Wildrik Barkema

251. 
     Increased Prevalence of Circulating Novel IL-17 Secreting Foxp3 Expressing CD4+ T Cells and Defective Suppressive Function of Circulating Foxp3+ Regulatory Cells Support Plasticity Between Th17 and Regulatory T Cells in Inflammatory Bowel Disease Patients

     Article • Inflammatory Bowel Diseases, November 2013, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

252. 
     A Cost-Utility Analysis of Smoking Cessation Programs for Patients with Crohnʼs Disease

     Article • The American Journal of Gastroenterology, October 2013, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

253. 
     Colorectal Neoplasia Surveillance in Patients with Inflammatory Bowel Disease and Primary Sclerosing Cholangitis: An Economic Evaluation

     Article • The American Journal of Gastroenterology, October 2013, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

254. 
     Zoonotic potential of Giardia duodenalis and Cryptosporidium spp. and prevalence of intestinal parasites in young dogs from different populations on Prince Edward Island, Canada

     Article • Veterinary Parasitology, September 2013, Elsevier

     Dr Herman Wildrik Barkema

255. 
     Associations of herd- and cow-level factors, cow lying behavior, and risk of elevated somatic cell count in free-stall housed lactating dairy cows

     Article • Preventive Veterinary Medicine, September 2013, Elsevier

     Dr Herman Wildrik Barkema

256. 
     Herd-level relationship between antimicrobial use and presence or absence of antimicrobial resistance in gram-negative bovine mastitis pathogens on Canadian dairy farms

     Article • Journal of Dairy Science, August 2013, American Dairy Science Association

     Dr Herman Wildrik Barkema

257. 
     Herd level approach to high bulk milk somatic cell count problems in dairy cattle

     Article • Veterinary Quarterly, June 2013, Taylor & Francis

     Dr Herman Wildrik Barkema

258. 
     550 Early Exposure to Airborne Particulate Matter Alters Intestinal Immune Function and Bacterial Handling in IL-10 Deficient Mice

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

259. 
     Tu2109 A Diet High in Fat and Refined Carbohydrate Decreases Anxiety and Exploratory Behaviour Under Normal but Not Inflammatory Conditions

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

260. 
     Sa1782 Peripheral Blood CD4+ T-Lymphocytes From Crohn's Disease Patients Demonstrate Hyper-Responses to PRO-Inflammatory Cytokines In Vitro by Generating IL-17/FOXP3 Double Expressing Sub-Population

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

261. 
     Su2120 Antibiotics Enhance Metabolic Dysregulation Induced by a Western-Style Diet High in Fat and Refined Carbohydrate in IL-10 Deficient Mice

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

262. 
     Tu1710 Up-Regulation of IL-10 and FOXP3 Regulatory T Cells At the Early Subclinical Stage of Experimental Paratuberculosis Infection in Calves

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

263. 
     Sa1774 Cigarette Smoke Extract Decreases Regulatory T-Cells and Increases IFN-Gamma Secreting T-Cells in Peripheral Blood From Crohn's Disease Compared to Ulcerative Colitis Patients: Differential Smoking Effects on Two Types of Inflammatory Bowel Disease

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

264. 
     1030 Distinctive Urinary Metabolite Profiles Correlate With Microbial Composition and Are Linked With Endoscopic Post-Operative Disease Recurrence in Crohn's Disease Patients

     Article • Gastroenterology, May 2013, Elsevier

     Dr Herman Wildrik Barkema

265. 
     Environmental Particulate Matter Induces Murine Intestinal Inflammatory Responses and Alters the Gut Microbiome

     Article • PLoS ONE, April 2013, PLOS

     Dr Herman Wildrik Barkema

266. 
     Population Structure of Harvested Red Foxes (Vulpes vulpes) and Coyotes (Canis latrans) on Prince Edward Island, Canada

     Article • The Canadian Field-Naturalist, April 2013, Ottawa Field-Naturalists' Club

     Dr Herman Wildrik Barkema

267. 
     Fecal Shedding of Toxocara canis and Other Parasites in Foxes and Coyotes on Prince Edward Island, Canada

     Article • Journal of Wildlife Diseases, April 2013, Wildlife Disease Association

     Dr Herman Wildrik Barkema

268. 
     High-resolution melt analysis for species identification of coagulase-negative staphylococci derived from bovine milk

     Article • Diagnostic Microbiology and Infectious Disease, March 2013, Elsevier

     Dr Herman Wildrik Barkema

269. 
     Environment and the Inflammatory Bowel Diseases

     Article • Canadian Journal of Gastroenterology, January 2013, Hindawi Publishing Corporation

     Dr Herman Wildrik Barkema

270. 
     Evaluation of age-dependent susceptibility in calves infected with two doses of Mycobacterium avium subspecies paratuberculosis using pathology and tissue culture

     Article • Veterinary Research, January 2013, Springer Science + Business Media

     Dr Herman Wildrik Barkema

271. 
     Associations of dairy cow behavior, barn hygiene, cow hygiene, and risk of elevated somatic cell count

     Article • Journal of Dairy Science, October 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

272. 
     Effect of an automated dipping and backflushing system on somatic cell counts

     Article • Journal of Dairy Science, September 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

273. 
     Antimicrobial resistance profiles of common mastitis pathogens on Canadian dairy farms

     Article • Journal of Dairy Science, August 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

274. 
     Epidemiology of coagulase-negative staphylococci intramammary infection in dairy cattle and the effect of bacteriological culture misclassification

     Article • Journal of Dairy Science, June 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

275. 
     The relationship between urban environment and the inflammatory bowel diseases: a systematic review and meta-analysis

     Article • BMC Gastroenterology, May 2012, Springer Science + Business Media

     Dr Herman Wildrik Barkema

276. 
     Tu1303 Risk of Surgery Following Diagnosis in Adult and Pediatric Ulcerative Colitis Patients: A Systematic Review and Meta-Analysis

     Article • Gastroenterology, May 2012, Elsevier

     Dr Herman Wildrik Barkema

277. 
     Tu1272 Cumulative Incidence of First Intestinal Surgery in Adult and Pediatric Crohn's Disease: A Systematic Review and Meta-Analysis

     Article • Gastroenterology, May 2012, Elsevier

     Dr Herman Wildrik Barkema

278. 
     Tu1344 Airborne Particulate Matter Alters Intestinal Permeability and Immune Function Through Direct Effects on Innate Immune Cells

     Article • Gastroenterology, May 2012, Elsevier

     Dr Herman Wildrik Barkema

279. 
     Tu1250 Use of Azathioprine in a Cohort of Crohn's Disease Patients on Anti-TNF Drugs and Related Surgical Outcomes

     Article • Gastroenterology, May 2012, Elsevier

     Dr Herman Wildrik Barkema

280. 
     Sa1267 Fibrostenotic Disease Behavior at the Onset of Biologic Therapy is a Predictor of Poor Outcomes

     Article • Gastroenterology, May 2012, Elsevier

     Dr Herman Wildrik Barkema

281. 
     Short communication: Effect of automatic postmilking teat disinfection and cluster flushing on the milking work routine

     Article • Journal of Dairy Science, May 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

282. 
     Sa1877 Decreased TGF-ß1 Secretion From Monocyte-Derived Dendritic Cells is Associated With Higher Frequency of IL-17 Secreting FOXP3+ CD4+ T Cells in Peripheral Blood From Inflammatory Bowel Disease Patients

     Article • Gastroenterology, May 2012, Elsevier

     Dr Herman Wildrik Barkema

283. 
     Giardia and Cryptosporidium on Dairy Farms and the Role these Farms May Play in Contaminating Water Sources in Prince Edward Island, Canada

     Article • Journal of Veterinary Internal Medicine, April 2012, Wiley

     Dr Herman Wildrik Barkema

284. 
     Herd-level association between antimicrobial use and antimicrobial resistance in bovine mastitis Staphylococcus aureus isolates on Canadian dairy farms

     Article • Journal of Dairy Science, April 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

285. 
     Molecular Epidemiology of Cryptosporidium and Giardia in Humans on Prince Edward Island, Canada: Evidence of Zoonotic Transmission From Cattle

     Article • Zoonoses and Public Health, March 2012, Wiley

     Dr Herman Wildrik Barkema

286. 
     Rapid identification of bovine mastitis pathogens by high-resolution melt analysis of 16S rDNA sequences

     Article • Veterinary Microbiology, March 2012, Elsevier

     Dr Herman Wildrik Barkema

287. 
     Antimicrobial use on Canadian dairy farms

     Article • Journal of Dairy Science, March 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

288. 
     Manageable risk factors associated with the lactational incidence, elimination, and prevalence of Staphylococcus aureus intramammary infections in dairy cows

     Article • Journal of Dairy Science, March 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

289. 
     Invited review: Mastitis in dairy heifers: Nature of the disease, potential impact, prevention, and control

     Article • Journal of Dairy Science, March 2012, American Dairy Science Association

     Dr Herman Wildrik Barkema

290. 
     Occurrence of Giardia and Cryptosporidium in pigs on Prince Edward Island, Canada

     Article • Veterinary Parasitology, February 2012, Elsevier

     Dr Herman Wildrik Barkema

291. 
     Occurrence of Cryptosporidium and Giardia on beef farms and water sources within the vicinity of the farms on Prince Edward Island, Canada

     Article • Veterinary Parasitology, February 2012, Elsevier

     Dr Herman Wildrik Barkema

292. 
     Increasing Incidence and Prevalence of the Inflammatory Bowel Diseases With Time, Based on Systematic Review

     Article • Gastroenterology, January 2012, Elsevier

     Dr Herman Wildrik Barkema

293. 
     Foodborne Illness Associated with Cryptosporidium and Giardia from Livestock

     Article • Journal of Food Protection, November 2011, International Association for Food Protection

     Dr Herman Wildrik Barkema

294. 
     Clostridium difficile Infection in Ulcerative Colitis: Increased Risk of Colectomy and Postoperative Infectious Complications

     Article • The American Journal of Gastroenterology, October 2011, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

295. 
     Accuracy of ICD9 and ICD 10 Codes for Clostridium difficile Among Ulcerative Colitis Patients

     Article • The American Journal of Gastroenterology, October 2011, Wolters Kluwer Health

     Dr Herman Wildrik Barkema

296. 
     Challenges associated with identifying the environmental determinants of the inflammatory bowel diseases

     Article • Inflammatory Bowel Diseases, August 2011, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

297. 
     Association of standing and lying behavior patterns and incidence of intramammary infection in dairy cows milked with an automatic milking system

     Article • Journal of Dairy Science, August 2011, American Dairy Science Association

     Dr Herman Wildrik Barkema

298. 
     Pathogen group specific risk factors at herd, heifer and quarter levels for intramammary infections in early lactating dairy heifers

     Article • Preventive Veterinary Medicine, May 2011, Elsevier

     Dr Herman Wildrik Barkema

299. 
     The in-Vitro Effect of Cigarette Smoke Extract on Monocyte-Derived Dendritic Cell Phenotypes is Different in Crohn's Disease Compared With Ulcerative Colitis Patients

     Article • Gastroenterology, May 2011, Elsevier

     Dr Herman Wildrik Barkema

300. 
     Incidence of primary sclerosing cholangitis: A systematic review and meta-analysis

     Article • Hepatology, April 2011, Wiley

     Dr Herman Wildrik Barkema

301. 
     Validity of administrative data for the diagnosis of primary sclerosing cholangitis: a population-based study

     Article • Liver International, March 2011, Wiley

     Dr Herman Wildrik Barkema

302. 
     The National Cohort of Dairy Farms—A data collection platform for mastitis research in Canada

     Article • Journal of Dairy Science, March 2011, American Dairy Science Association

     Dr Herman Wildrik Barkema

303. 
     Evaluation of a risk-screening questionnaire to detect equine lung inflammation: Results of a large field study

     Article • Equine Veterinary Journal, February 2011, Wiley

     Dr Herman Wildrik Barkema

304. 
     Invited review: Effect of udder health management practices on herd somatic cell count

     Article • Journal of Dairy Science, February 2011, American Dairy Science Association

     Dr Herman Wildrik Barkema

305. 
     Short communication: Influence of sampling interval on the accuracy of predicting bulk milk somatic cell count

     Article • Journal of Dairy Science, February 2011, American Dairy Science Association

     Dr Herman Wildrik Barkema

306. 
     Diagnostic Accuracy Assessment of Sensititre and Agar Disk Diffusion for Determining Antimicrobial Resistance Profiles of Bovine Clinical Mastitis Pathogens

     Article • Journal of Clinical Microbiology, January 2011, ASM Journals

     Dr Herman Wildrik Barkema

307. 
     Subclinical mastitis and associated risk factors on dairy farms in New South Wales

     Article • Australian Veterinary Journal, January 2011, Wiley

     Dr Herman Wildrik Barkema

308. 
     Cow-specific treatment of clinical mastitis: An economic approach

     Article • Journal of Dairy Science, January 2011, American Dairy Science Association

     Dr Herman Wildrik Barkema

309. 
     Management practices associated with the bulk-milk prevalence of Staphylococcus aureus in Canadian dairy farms

     Article • Preventive Veterinary Medicine, October 2010, Elsevier

     Dr Herman Wildrik Barkema

310. 
     Milk selenium concentration and its association with udder health in Atlantic Canadian dairy herds

     Article • Journal of Dairy Science, October 2010, American Dairy Science Association

     Dr Herman Wildrik Barkema

311. 
     The effect of selenium supplementation before calving on early-lactation udder health in pastured dairy heifers

     Article • Journal of Dairy Science, October 2010, American Dairy Science Association

     Dr Herman Wildrik Barkema

312. 
     Development and validation of a bilingual questionnaire for measuring udder health related management practices on dairy farms

     Article • Preventive Veterinary Medicine, June 2010, Elsevier

     Dr Herman Wildrik Barkema

313. 
     Effect of coagulase-negative staphylococci on somatic cell count in Dutch dairy herds

     Article • Journal of Dairy Research, May 2010, Cambridge University Press

     Dr Herman Wildrik Barkema

314. 
     Heifers infected with coagulase-negative staphylococci in early lactation have fewer cases of clinical mastitis and higher milk production in their first lactation than noninfected heifers

     Article • Journal of Dairy Science, May 2010, American Dairy Science Association

     Dr Herman Wildrik Barkema

315. 
     Simplify the interpretation of alert lists for clinical mastitis in automatic milking systems

     Article • Computers and Electronics in Agriculture, April 2010, Elsevier

     Dr Herman Wildrik Barkema

316. 
     Barium selenate supplementation and its effect on intramammary infection in pasture-based dairy cows

     Article • Journal of Dairy Science, April 2010, American Dairy Science Association

     Dr Herman Wildrik Barkema

317. 
     Prediction of the herd somatic cell count of the following month using a linear mixed effect model

     Article • Journal of Dairy Science, January 2010, American Dairy Science Association

     Dr Herman Wildrik Barkema

318. 
     Invited review: The role of contagious disease in udder health

     Article • Journal of Dairy Science, October 2009, American Dairy Science Association

     Dr Herman Wildrik Barkema

319. 
     Reliability of the bulk milk somatic cell count as an indication of average herd somatic cell count

     Article • Journal of Dairy Research, September 2009, Cambridge University Press

     Dr Herman Wildrik Barkema

320. 
     Heifer and quarter characteristics associated with periparturient blood and milk neutrophil apoptosis in healthy heifers and in heifers with subclinical mastitis

     Article • Journal of Dairy Science, September 2009, American Dairy Science Association

     Dr Herman Wildrik Barkema

321. 
     Effect of prepartum dry cow antibiotic treatment in dairy heifers on udder health and milk production

     Article • Journal of Dairy Science, September 2009, American Dairy Science Association

     Dr Herman Wildrik Barkema

322. 
     Providing probability distributions for the causal pathogen of clinical mastitis using naive Bayesian networks

     Article • Journal of Dairy Science, June 2009, American Dairy Science Association

     Dr Herman Wildrik Barkema

323. 
     Performance of API Staph ID 32 and Staph-Zym for identification of coagulase-negative staphylococci isolated from bovine milk samples

     Article • Veterinary Microbiology, May 2009, Elsevier

     Professor Freddy Haesebrouck, Dr Herman Wildrik Barkema

324. 
     Prevalence and molecular characterization of Cryptosporidium spp. in dairy calves from 11 farms in Prince Edward Island, Canada

     Article • Veterinary Parasitology, March 2009, Elsevier

     Dr Herman Wildrik Barkema

325. 
     Analytical specificity and sensitivity of a real-time polymerase chain reaction assay for identification of bovine mastitis pathogens

     Article • Journal of Dairy Science, March 2009, American Dairy Science Association

     Dr Herman Wildrik Barkema

326. 
     Heifer and CNS mastitis

     Article • Veterinary Microbiology, February 2009, Elsevier

     Dr Herman Wildrik Barkema

327. 
     Impact of intramammary infections in dairy heifers on future udder health, milk production, and culling

     Article • Veterinary Microbiology, February 2009, Elsevier

     Dr Herman Wildrik Barkema

328. 
     Prevalence and herd-level risk factors for intramammary infection with coagulase-negative staphylococci in Dutch dairy herds

     Article • Veterinary Microbiology, February 2009, Elsevier

     Dr Herman Wildrik Barkema

329. 
     Prevalence of intramammary infection in Dutch dairy herds

     Article • Journal of Dairy Research, January 2009, Cambridge University Press

     Dr Herman Wildrik Barkema

330. 
     Meta-analysis of the effect of oral selenium supplementation on milk selenium concentration in cattle

     Article • Journal of Dairy Science, January 2009, American Dairy Science Association

     Dr Herman Wildrik Barkema

331. 
     Mastitis control: From science to practice

     Article • April 2008, Brill

     Dr Laura Hänninen, Dr Herman Wildrik Barkema

332. 
     Incidence Rate of Clinical Mastitis on Canadian Dairy Farms

     Article • Journal of Dairy Science, April 2008, American Dairy Science Association

     Dr Herman Wildrik Barkema

333. 
     The Influence of Cow Factors on the Incidence of Clinical Mastitis in Dairy Cows

     Article • Journal of Dairy Science, April 2008, American Dairy Science Association

     Dr Herman Wildrik Barkema

334. 
     Comparison of flow cytometry and immunofluorescence microscopy for the detection of Giardia duodenalis in bovine fecal samples

     Article • Journal of Veterinary Diagnostic Investigation, March 2008, SAGE Publications

     Dr Herman Wildrik Barkema

335. 
     Dogs as Sources and Sentinels of Parasites in Humans and Wildlife, Northern Canada

     Article • Emerging Infectious Diseases, January 2008, Centers for Disease Control and Prevention (CDC)

     Dr Herman Wildrik Barkema

336. 
     An outbreak of dictyocaulosis in lactating cows on a dairy farm

     Article • Journal of the American Veterinary Medical Association, December 2007, American Veterinary Medical Association (AVMA)

     Dr Herman Wildrik Barkema

337. 
     Prevalence and distribution of mastitis pathogens in subclinically infected dairy cows in Flanders, Belgium

     Article • Journal of Dairy Research, October 2007, Cambridge University Press

     Dr Herman Wildrik Barkema

338. 
     Effect of Herd Characteristics, Management Practices, and Season on Different Categories of the Herd Somatic Cell Count

     Article • Journal of Dairy Science, September 2007, American Dairy Science Association

     Dr Herman Wildrik Barkema

339. 
     Short Communication: Comparison of Bulk Milk, Yield-Corrected, and Average Somatic Cell Counts as Parameters to Summarize the Subclinical Mastitis Situation in a Dairy Herd

     Article • Journal of Dairy Science, September 2007, American Dairy Science Association

     Dr Herman Wildrik Barkema

340. 
     Somatic Cell Count During and Between Milkings

     Article • Journal of Dairy Science, August 2007, American Dairy Science Association

     Dr Herman Wildrik Barkema

341. 
     Efficacy of vaccination in preventing giardiasis in calves

     Article • Veterinary Parasitology, May 2007, Elsevier

     Dr Herman Wildrik Barkema

342. 
     Evaluation of four serological techniques to determine the seroprevalence of Neospora caninum in foxes (Vulpes vulpes) and coyotes (Canis latrans) on Prince Edward Island, Canada

     Article • Veterinary Parasitology, April 2007, Elsevier

     Dr Herman Wildrik Barkema

343. 
     The Effect of Season on Somatic Cell Count and the Incidence of Clinical Mastitis

     Article • Journal of Dairy Science, April 2007, American Dairy Science Association

     Dr Herman Wildrik Barkema

344. 
     Comparison of serological methods for the diagnosis of Neospora caninum infection in cattle

     Article • Veterinary Parasitology, January 2007, Elsevier

     Dr Herman Wildrik Barkema

345. 
     Mastitis in dairy production

     Article • January 2007, Brill

     Dr Herman Wildrik Barkema

346. 
     Giardia duodenalis and Cryptosporidium spp. in a veterinary college bovine teaching herd

     Article • Veterinary Parasitology, December 2006, Elsevier

     Dr Herman Wildrik Barkema

347. 
     NEOSPORA CANINUM–LIKE OOCYSTS OBSERVED IN FECES OF FREE-RANGING RED FOXES (VULPES VULPES) AND COYOTES (CANIS LATRANS)

     Article • Journal of Parasitology, December 2006, American Society of Parasitologists

     Dr Herman Wildrik Barkema

348. 
     Test characteristics from latent-class models of the California Mastitis Test

     Article • Preventive Veterinary Medicine, November 2006, Elsevier

     Dr Herman Wildrik Barkema

349. 
     Invited Review: The Role of Cow, Pathogen, and Treatment Regimen in the Therapeutic Success of Bovine Staphylococcus aureus Mastitis

     Article • Journal of Dairy Science, June 2006, American Dairy Science Association

     Dr Herman Wildrik Barkema

350. 
     Agreement between three ELISAs for Mycobacterium avium subsp. paratuberculosis in dairy cattle

     Article • Veterinary Microbiology, May 2006, Elsevier

     Dr Herman Wildrik Barkema

351. 
     Efficacy of using an internal teat sealer to prevent new intramammary infections in nonlactating dairy cattle

     Article • Journal of the American Veterinary Medical Association, May 2006, American Veterinary Medical Association (AVMA)

     Dr Herman Wildrik Barkema

352. 
     Evaluation of three ELISAs for Mycobacterium avium subsp. paratuberculosis using tissue and fecal culture as comparison standards

     Article • Veterinary Microbiology, September 2005, Elsevier

     Dr Herman Wildrik Barkema

353. 
     Comparison of Two Enzyme-Linked Immunosorbent Assays for Diagnosis of Mycobacterium Avium Subsp. Paratuberculosis

     Article • Journal of Veterinary Diagnostic Investigation, September 2005, SAGE Publications

     Dr Herman Wildrik Barkema

354. 
     Seroprevalence of pestivirus in four species of alpine wild ungulates in the High Valley of Susa, Italy

     Article • Veterinary Microbiology, July 2005, Elsevier

     Dr Herman Wildrik Barkema

355. 
     Impact of Early Lactation Somatic Cell Count in Heifers on Milk Yield Over the First Lactation

     Article • Journal of Dairy Science, March 2005, American Dairy Science Association

     Dr Herman Wildrik Barkema

356. 
     Association Between Somatic Cell Count in Early Lactation and Culling of Dairy Heifers Using Cox Frailty Models

     Article • Journal of Dairy Science, February 2005, American Dairy Science Association

     Dr Herman Wildrik Barkema

357. 
     Associations between somatic cell count patterns and the incidence of clinical mastitis

     Article • Preventive Veterinary Medicine, January 2005, Elsevier

     Dr Herman Wildrik Barkema

358. 
     Impact of Early Lactation Somatic Cell Count in Heifers on Somatic Cell Counts Over the First Lactation

     Article • Journal of Dairy Science, November 2004, American Dairy Science Association

     Dr Herman Wildrik Barkema

359. 
     Cow-Level Prevalence of Paratuberculosis in Culled Dairy Cows in Atlantic Canada and Maine

     Article • Journal of Dairy Science, November 2004, American Dairy Science Association

     Dr Herman Wildrik Barkema

360. 
     Certification of herds as free of Mycobacterium paratuberculosis infection: actual pooled faecal results versus certification model predictions

     Article • Preventive Veterinary Medicine, October 2004, Elsevier

     Dr Herman Wildrik Barkema

361. 
     In vitro growth inhibition of major mastitis pathogens by Staphylococcus chromogenes originating from teat apices of dairy heifers

     Article • Veterinary Microbiology, July 2004, Elsevier

     Professor Freddy Haesebrouck, Dr Herman Wildrik Barkema

362. 
     Somatic Cell Count Distributions During Lactation Predict Clinical Mastitis

     Article • Journal of Dairy Science, May 2004, American Dairy Science Association

     Dr Herman Wildrik Barkema

363. 
     Retained placenta in Friesian mares: incidence, and potential risk factors with special emphasis on gestational length

     Article • Theriogenology, April 2004, Elsevier

     Dr Herman Wildrik Barkema

364. 
     Effect of inbreeding on the incidence of retained placenta in Friesian horses1

     Article • Journal of Animal Science, April 2004, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

365. 
     Effect of inbreeding on the incidence of retained placenta in Friesian horses1

     Article • Journal of Animal Science, April 2004, Oxford University Press (OUP)

     Dr Herman Wildrik Barkema

366. 
     Management Practices and Heifer Characteristics Associated with Early Lactation Somatic Cell Count of Belgian Dairy Heifers

     Article • Journal of Dairy Science, April 2004, American Dairy Science Association

     Dr Herman Wildrik Barkema

367. 
     Associations Between Pathogen-Specific Cases of Clinical Mastitis and Somatic Cell Count Patterns

     Article • Journal of Dairy Science, January 2004, American Dairy Science Association

     Dr Herman Wildrik Barkema

368. 
     Specificity of two tests for the early diagnosis of bovine paratuberculosis based on cell-mediated immunity: the Johnin skin test and the gamma interferon assay

     Article • Veterinary Microbiology, December 2003, Elsevier

     Dr Herman Wildrik Barkema

369. 
     Genetic associations for pathogen-specific clinical mastitis and patterns of peaks in somatic cell count

     Article • Animal Science, October 2003, Cambridge University Press

     Dr Herman Wildrik Barkema

370. 
     Short-Term Effect of Transition from Conventional to Automated Milking on Teat Skin and Teat End Condition

     Article • Journal of Dairy Science, May 2003, American Dairy Science Association

     Dr Herman Wildrik Barkema

371. 
     Prepartum teat apex colonization with Staphylococcus chromogenes in dairy heifers is associated with low somatic cell count in early lactation

     Article • Veterinary Microbiology, April 2003, Elsevier

     Dr Herman Wildrik Barkema

372. 
     Clinical, epidemiological and molecular characteristics of Streptococcus uberis infections in dairy herds

     Article • Epidemiology and Infection, March 2003, Cambridge University Press

     Dr Herman Wildrik Barkema

373. 
     Evaluation of a single serological screening of dairy herds for Neospora caninum antibodies

     Article • Veterinary Parasitology, January 2003, Elsevier

     Dr Herman Wildrik Barkema

374. 
     Comparison of Staphylococcus aureus Isolates from Bovine and Human Skin, Milking Equipment, and Bovine Milk by Phage Typing, Pulsed-Field Gel Electrophoresis, and Binary Typing

     Article • Journal of Clinical Microbiology, November 2002, ASM Journals

     Dr Herman Wildrik Barkema

375. 
     A high rate of seroconversion for Neospora caninum in a dairy herd without an obvious increased incidence of abortions

     Article • Veterinary Parasitology, November 2002, Elsevier

     Dr Herman Wildrik Barkema

376. 
     A mathematical model of Staphylococcus aureus control in dairy herds

     Article • Epidemiology and Infection, October 2002, Cambridge University Press

     Dr Herman Wildrik Barkema

377. 
     Probability of and risk factors for introduction of infectious diseases into Dutch SPF dairy farms: a cohort study

     Article • Preventive Veterinary Medicine, July 2002, Elsevier

     Dr Herman Wildrik Barkema

378. 
     Risk factors for clinical Salmonella enterica subsp. enterica serovar Typhimurium infection on Dutch dairy farms

     Article • Preventive Veterinary Medicine, June 2002, Elsevier

     Dr Herman Wildrik Barkema

379. 
     The Effect of Pathogen-Specific Clinical Mastitis on the Lactation Curve for Somatic Cell Count

     Article • Journal of Dairy Science, May 2002, American Dairy Science Association

     Dr Herman Wildrik Barkema

380. 
     Evaluation of Two Absorbed Enzyme-Linked Immunosorbent Assays and a Complement Fixation Test as Replacements for Fecal Culture in the Detection of Cows Shedding Mycobacterium Avium Subspecies Paratuberculosis

     Article • Journal of Veterinary Diagnostic Investigation, May 2002, SAGE Publications

     Dr Herman Wildrik Barkema

381. 
     Natural transmission routes of Neospora caninum between farm dogs and cattle

     Article • Veterinary Parasitology, April 2002, Elsevier

     Dr Herman Wildrik Barkema

382. 
     Genetic parameters of pathogen-specific incidence of clinical mastitis in dairy cows

     Article • Animal Science, April 2002, Cambridge University Press

     Dr Herman Wildrik Barkema

383. 
     Simultaneous intramammary and intranasal inoculation of lactating cows with bovine herpesvirus 4 induce subclinical mastitis

     Article • Veterinary Microbiology, April 2002, Elsevier

     Dr Herman Wildrik Barkema

384. 
     Point source exposure of cattle to Neospora caninum consistent with periods of common housing and feeding and related to the introduction of a dog

     Article • Veterinary Parasitology, April 2002, Elsevier

     Dr Herman Wildrik Barkema

385. 
     Effect of preculture freezing and incubation on bacteriological isolation from subclinical mastitis samples

     Article • Veterinary Microbiology, March 2002, Elsevier

     Dr Herman Wildrik Barkema

386. 
     Herd-level diagnosis for Salmonella enterica subsp. enterica serovar Dublin infection in bovine dairy herds

     Article • Preventive Veterinary Medicine, February 2002, Elsevier

     Dr Herman Wildrik Barkema

387. 
     Reproductive performance of Friesian mares after retained placenta and manual removal of the placenta

     Article • Theriogenology, January 2002, Elsevier

     Dr Herman Wildrik Barkema

388. 
     Serum calcium and magnesium concentrations and the use of a calcium–magnesium-borogluconate solution in the treatment of Friesian mares with retained placenta

     Article • Theriogenology, January 2002, Elsevier

     Dr Herman Wildrik Barkema

389. 
     Relationship Between Teat-End Callosity and Occurrence of Clinical Mastitis

     Article • Journal of Dairy Science, December 2001, American Dairy Science Association

     Dr Herman Wildrik Barkema

390. 
     Cow- and Quarter-Level Risk Factors for Streptococcus uberis and Staphylococcus aureus Mastitis

     Article • Journal of Dairy Science, December 2001, American Dairy Science Association

     Dr Herman Wildrik Barkema

391. 
     Evaluation of Two Enzyme-Linked Immunosorbent Assays for Detecting Salmonella enterica subsp.enterica Serovar Dublin Antibodies in Bulk Milk

     Article • Clinical and Diagnostic Laboratory Immunology, November 2001, ASM Journals

     Dr Herman Wildrik Barkema

392. 
     Dogs shed Neospora caninum oocysts after ingestion of naturally infected bovine placenta but not after ingestion of colostrum spiked with Neospora caninum tachyzoites

     Article • International Journal for Parasitology, June 2001, Elsevier

     Dr Herman Wildrik Barkema

393. 
     Analysis of an Outbreak of Streptococcus uberis Mastitis

     Article • Journal of Dairy Science, March 2001, American Dairy Science Association

     Dr Herman Wildrik Barkema

394. 
     Use of long-term vaccination with a killed vaccine to prevent fecal shedding ofMycobacterium aviumsubspparatuberculosisin dairy herds

     Article • American Journal of Veterinary Research, February 2001, American Veterinary Medical Association (AVMA)

     Dr Herman Wildrik Barkema

395. 
     Evidence of post-natal transmission of Neospora caninum in Dutch dairy herds

     Article • International Journal for Parasitology, February 2001, Elsevier

     Dr Herman Wildrik Barkema

396. 
     Retained placenta in Friesian mares: reproductive performance after foal heat breeding versus breeding in a subsequent heat

     Article • Pferdeheilkunde Equine Medicine, January 2001, Hippiatrika GmbH

     Dr Herman Wildrik Barkema

397. 
     Retained placenta in Friesian mares: incidence, risk factors, therapy, and consequences

     Article • Pferdeheilkunde Equine Medicine, January 2001, Hippiatrika GmbH

     Dr Herman Wildrik Barkema

398. 
     Prevalence and regional distribution of paratuberculosis in dairy herds in the Netherlands

     Article • Veterinary Microbiology, December 2000, Elsevier

     Dr Herman Wildrik Barkema

399. 
     Classification and Longitudinal Examination of Callused Teat Ends in Dairy Cows

     Article • Journal of Dairy Science, December 2000, American Dairy Science Association

     Dr Herman Wildrik Barkema

400. 
     Culture of Strategically Pooled Bovine Fecal Samples as a Method to Screen Herds for Paratuberculosis

     Article • Journal of Veterinary Diagnostic Investigation, November 2000, SAGE Publications

     Dr Herman Wildrik Barkema

401. 
     Application of Pulsed-Field Gel Electrophoresis and Binary Typing as Tools in Veterinary Clinical Microbiology and Molecular Epidemiologic Analysis of Bovine and Human Staphylococcus aureus Isolates

     Article • Journal of Clinical Microbiology, May 2000, ASM Journals

     Dr Herman Wildrik Barkema

402. 
     Factors Associated with Cure after Therapy of Clinical Mastitis Caused by Staphylococcus aureus

     Article • Journal of Dairy Science, February 2000, American Dairy Science Association

     Dr Herman Wildrik Barkema

403. 
     Evaluation of Three Newly Developed Enzyme-Linked Immunosorbent Assays and Two Agglutination Tests for Detecting Salmonella enterica subsp. enterica Serovar Dublin Infections in Dairy Cattle

     Article • Journal of Clinical Microbiology, January 2000, ASM Journals

     Dr Herman Wildrik Barkema

404. 
     Management Practices Associated with the Incidence Rate of Clinical Mastitis

     Article • Journal of Dairy Science, August 1999, American Dairy Science Association

     Dr Herman Wildrik Barkema

405. 
     Management Style and Its Association with Bulk Milk Somatic Cell Count and Incidence Rate of Clinical Mastitis

     Article • Journal of Dairy Science, August 1999, American Dairy Science Association

     Dr Herman Wildrik Barkema

406. 
     Factors Influencing the Isolation of Mycobacterium Avium Subsp. Paratuberculosis from Bovine Fecal Samples

     Article • Journal of Veterinary Diagnostic Investigation, July 1999, SAGE Publications

     Dr Herman Wildrik Barkema

407. 
     Quarter-milk somatic cell count at calving and at the first six milkings after calving

     Article • Preventive Veterinary Medicine, January 1999, Elsevier

     Dr Herman Wildrik Barkema

408. 
     Recurrent Clinical Mastitis Caused by Escherichia coli in Dairy Cows

     Article • Journal of Dairy Science, January 1999, American Dairy Science Association

     Dr Herman Wildrik Barkema

409. 
     Management Practices Associated with Low, Medium, and High Somatic Cell Counts in Bulk Milk

     Article • Journal of Dairy Science, July 1998, American Dairy Science Association

     Dr Herman Wildrik Barkema

410. 
     Exploratory study on the economic value of a closed farming system on Dutch dairy farms

     Article • Veterinary Record, March 1998, BMJ

     Dr Herman Wildrik Barkema

411. 
     Milk production and reproduction during a subclinical bovine herpesvirus 1 infection on a dairy farm

     Article • Preventive Veterinary Medicine, February 1998, Elsevier

     Dr Herman Wildrik Barkema

412. 
     Risk Factors for Clinical Mastitis in a Random Sample of Dairy Herds from the Southern Part of The Netherlands

     Article • Journal of Dairy Science, February 1998, American Dairy Science Association

     Dr Herman Wildrik Barkema

413. 
     Incidence of Clinical Mastitis in Dairy Herds Grouped in Three Categories by Bulk Milk Somatic Cell Counts

     Article • Journal of Dairy Science, February 1998, American Dairy Science Association

     Dr Herman Wildrik Barkema

414. 
     Estimation of Interdependence Among Quarters of the Bovine Udder with Subclinical Mastitis and Implications for Analysis

     Article • Journal of Dairy Science, August 1997, American Dairy Science Association

     Dr Herman Wildrik Barkema

415. 
     Sheep do not have a major role in bovine herpesvirus 1 transmission

     Article • Veterinary Microbiology, June 1997, Elsevier

     Dr Herman Wildrik Barkema

416. 
     The effect of discontinuation of postmilking teat disinfection in low somatic cell count herds. II. Dynamics of intramammary infections

     Article • Veterinary Quarterly, June 1997, Taylor & Francis

     Dr Herman Wildrik Barkema

417. 
     The effect of discontinuation of postmilking teat disinfection in low somatic cell count herds. I. Incidence of clinical mastitis

     Article • Veterinary Quarterly, June 1997, Taylor & Francis

     Dr Herman Wildrik Barkema

418. 
     Effect of cobalt supplementation on serum vitamin B12levels, weight gain and survival rate in lambs grazing cobalt‐deficient pastures

     Article • Veterinary Quarterly, March 1997, Taylor & Francis

     Dr Herman Wildrik Barkema

419. 
     Effect of Freezing on Somatic Cell Count of Quarter Milk Samples as Determined by a Fossomatic Electronic Cell Counter

     Article • Journal of Dairy Science, February 1997, American Dairy Science Association

     Dr Herman Wildrik Barkema

420. 
     Population dynamics of bovine herpesvirus 1 infection in a dairy herd

     Article • Veterinary Microbiology, November 1996, Elsevier

     Dr Herman Wildrik Barkema

421. 
     The effects of lameness on reproductive performance, milk production and culling in Dutch dairy farms

     Article • Preventive Veterinary Medicine, September 1994, Elsevier

     Dr Herman Wildrik Barkema

422. 
     The economics of caesarian section in dairy cattle

     Article • Preventive Veterinary Medicine, April 1994, Elsevier

     Dr Herman Wildrik Barkema

423. 
     Fertility, production and culling following cesarean section in dairy cattle

     Article • Theriogenology, October 1992, Elsevier

     Dr Herman Wildrik Barkema

424. 
     Cesarean section in dairy cattle: A study of risk factors

     Article • Theriogenology, February 1992, Elsevier

     Dr Herman Wildrik Barkema

425. 
     Control of mastitis and enhancement of milk quality.

     Article • CABI Publishing

     Dr Herman Wildrik Barkema

426. 
     Crohn's disease in humans and Johne's disease in cattle - linked diseases?

     Article • CABI Publishing

     Dr Herman Wildrik Barkema

427. 
     Global prevalence and economics of infection with Mycobacterium avium subsp. paratuberculosis in ruminants.

     Article • CABI Publishing

     Dr Herman Wildrik Barkema