All Stories

  1. Efficacy of long day photoperiod treatment with respect to age of bucks for stimulation of the “male effect” on does at Mediterranean latitudes

    Article • Small Ruminant Research, July 2022, Elsevier

    José Luis Guzmán

  2. Organoleptic and Nutritional Traits of Lambs from Spanish Mediterranean Islands Raised under a Traditional Production System

    Article • Foods, April 2022, MDPI AG

    José Luis Guzmán

  3. The High Testosterone Concentrations of the Bucks Used in the “Male Effect” Is Not a Prerequisite for Obtaining High Ovarian Activity in Goats from Mediterranean Latitudes

    Article • Animals, April 2022, MDPI AG

    José Luis Guzmán

  4. The use of photoperiod-treated bucks to induce a “male effect” does not compensate for the negative effects of nutritional restriction of the females in Mediterranean goats

    Article • Research in Veterinary Science, October 2021, Elsevier

    José Luis Guzmán

  5. Efecto de la zona de procedencia y época de muestreo sobre la composición bromatológica de la torta de maracuyá

    Article • Revista Científica de la Facultad de Ciencias Veterinarias, September 2021, Cuestiones Politicas, Universidad del Zulia

    José Luis Guzmán

  6. Supplementing the Diet of Dairy Goats with Dried Orange Pulp throughout Lactation: I. Effect on Milk Performance, Nutrient Utilisation, Blood Parameters and Production Economics

    Article • Animals, September 2021, MDPI AG

    José Luis Guzmán

  7. Supplementing the Diet of Dairy Goats with Dried Orange Pulp throughout Lactation: II Effect on Milk Fatty Acids Profile, Phenolic Compounds, Fat-Soluble Vitamins and Antioxidant Capacity

    Article • Animals, August 2021, MDPI AG

    José Luis Guzmán

  8. Calidad sensorial de la carne de cabritos lechales criados en sistemas de producción basados en pastoreo

    Article • Revista Mexicana de Ciencias Pecuarias, June 2021, Revista Mexicana de Ciencias Pecuarias

    José Luis Guzmán

  9. Photoperiod-Treatment in Mediterranean Bucks Can Improve the Reproductive Performance of the Male Effect Depending on the Extent of Their Seasonality

    Article • Animals, February 2021, MDPI AG

    José Luis Guzmán

  10. Physicochemical Composition, Antioxidant Status, Fatty Acid Profile, and Volatile Compounds of Milk and Fresh and Ripened Ewes’ Cheese from a Sustainable Part-Time Grazing System

    Article • Foods, January 2021, MDPI AG

    José Luis Guzmán

  11. The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations

    Article • Italian Journal of Animal Science, January 2021, Taylor & Francis

    José Luis Guzmán

  12. Effect of Citrus By-product on Physicochemical Parameters, Sensory Analysis and Volatile Composition of Different Kinds of Cheese from Raw Goat Milk

    Article • Foods, October 2020, MDPI AG

    José Luis Guzmán

  13. BROMATOLOGICAL COMPOSITION OF PALM KERNEL MEAL ACCORDING TO ITS ORIGIN AND PRODUCTION PERIODS POTENTIAL USE OF PALM KERNEL MEAL IN ANIMAL FEED

    Article • Journal of Oil Palm Research, October 2020, Malaysian Palm Oil Board

    José Luis Guzmán

  14. The Use of Concentrates Rich in Orange By-Products in Goat Feed and Its Effects on Physico-Chemical, Textural, Fatty Acids, Volatile Compounds and Sensory Characteristics of the Meat of Suckling Kids

    Article • Animals, April 2020, MDPI AG

    José Luis Guzmán

  15. Using dried orange pulp in the diet of dairy goats: effects on milk yield and composition and blood parameters of dams and growth performance and carcass quality of kids

    Article • animal, January 2020, Elsevier

    José Luis Guzmán

  16. Meat quality of goat suckling kids

    Article • October 2019, De Gruyter

    José Luis Guzmán

  17. Photoperiod-treated bucks are equal to melatonin-treated bucks for inducing reproductive behaviour and physiological functions via the “male effect” in Mediterranean goats

    Article • Animal Reproduction Science, March 2019, Elsevier

    José Luis Guzmán

  18. Carcase and meat quality of Blanca Andaluza kids fed exclusively with milk from their dams under organic and conventional grazing-based management systems

    Article • Italian Journal of Animal Science, January 2019, Taylor & Francis

    Dr Anastasio Argüello, José Luis Guzmán

  19. The reproductive response to the male effect of 7- or 10-month-old female goats is improved when photostimulated males are used

    Article • animal, January 2019, Elsevier

    José Luis Guzmán

  20. Effect of body condition and melatonin implants, inserted at different times of the year, on ovarian activity in goats maintained without male contact from the time of implantation

    Article • Animal Production Science, January 2019, CSIRO Publishing

    José Luis Guzmán

  21. Reproductive responses to sexually active buck of does treated with melatonin when body weight/body condition is increasing or decreasing

    Article • Animal Reproduction Science, March 2018, Elsevier

    José Luis Guzmán

  22. When using photostimulated bucks to induce the male effect in female goats living at Mediterranean latitudes, a male: female ratio of 1:20 is optimum

    Article • Journal of Applied Animal Research, December 2017, Taylor & Francis

    José Luis Guzmán

  23. The isolation of females from males to promote a later male effect is unnecessary if the bucks used are sexually active

    Article • Theriogenology, June 2017, Elsevier

    José Luis Guzmán

  24. Can dairy goat farms in mountain areas reach a satisfactory level of profitability without intensification? A case study in Andalusia (Spain)

    Article • Agroecology and Sustainable Food Systems, April 2017, Taylor & Francis

    José Luis Guzmán

  25. The reproductive performance of female goats treated with melatonin is not improved after introduction to bucks displaying springtime sexual activity if these does are experiencing decreasing body weight/condition score

    Article • Animal Reproduction Science, April 2017, Elsevier

    José Luis Guzmán

  26. Seasonal changes in reproductive activity, sperm variables and sperm freezability in Blanca Andaluza bucks

    Article • Spanish Journal of Agricultural Research, December 2015, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA)

    José Luis Guzmán

  27. Exogenous melatonin does not improve the freezability of Blanca Andaluza goat semen over exposure to two months of short days

    Article • Animal Reproduction Science, June 2015, Elsevier

    José Luis Guzmán

  28. Reproductive performance response to the male effect in goats is improved when doe live weight/body condition score is increasing

    Article • Animal Reproduction Science, May 2015, Elsevier

    José Luis Guzmán

  29. Body condition score is a critical factor determining the onset of puberty in Blanca Andaluza female goat kids

    Article • Animal Production Science, January 2015, CSIRO Publishing

    José Luis Guzmán

  30. No previous isolation of female goats is required for novel males to induce a male effect, especially if direct physical contact is established

    Article • Theriogenology, December 2014, Elsevier

    José Luis Guzmán

  31. Role of body condition score and body weight in the control of seasonal reproduction in Blanca Andaluza goats

    Article • Animal Reproduction Science, December 2014, Elsevier

    José Luis Guzmán

  32. The timing of oestrus, the preovulatory LH surge and ovulation in Blanca Andaluza goats synchronised by intravaginal progestagen sponge treatment is modified by season but not by body condition score

    Article • Animal Reproduction Science, May 2014, Elsevier

    José Luis Guzmán

  33. Short communication. Melatonin improves the reproductive performance of seasonal anoestrus goats exposed to buck effect during early post-partum

    Article • Spanish Journal of Agricultural Research, December 2013, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA)

    José Luis Guzmán

  34. Fatty acid composition of muscle and adipose tissues of organic and conventional Blanca Andaluza suckling kids

    Article • Spanish Journal of Agricultural Research, July 2013, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA)

    José Luis Guzmán

  35. Fatty acid composition of muscle and internal fat depots of organic and conventional Payoya goat kids

    Article • Spanish Journal of Agricultural Research, July 2013, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA)

    José Luis Guzmán

  36. Exogenous melatonin after a treatment of artificial long days is able to increase LH secretion during seasonal anoestrus in Payoya goats

    Article • Journal of Applied Animal Research, March 2013, Taylor & Francis

    José Luis Guzmán

  37. Influence of the male effect on the reproductive performance of female Payoya goats implanted with melatonin at the winter solstice

    Article • Animal Reproduction Science, March 2013, Elsevier

    José Luis Guzmán

  38. Enhancement of the male effect on reproductive performance in female Mediterranean goats with long day and/or melatonin treatment

    Article • The Veterinary Journal, June 2012, Elsevier

    José Luis Guzmán

  39. Reproductive Performance is Improved During Seasonal Anoestrus when Female and Male Murciano-Granadina Goats Receive Melatonin Implants and in Payoya Goats when Females are thus Treated

    Article • Reproduction in Domestic Animals, October 2011, Wiley

    José Luis Guzmán

  40. The effect of nutrition on the neural mechanisms potentially involved in melatonin-stimulated LH secretion in female Mediterranean goats

    Article • Journal of Endocrinology, September 2011, Bioscientifica

    José Luis Guzmán

  41. Prevention and Treatment of Breast Cancer Using Melatonin

    Article • August 2011, Taylor & Francis

    José Luis Guzmán

  42. The response of luteinizing hormone secretion to photoperiod is modified by the level of nutrition in female Mediterranean goats

    Article • Animal Reproduction Science, June 2011, Elsevier

    José Luis Guzmán

  43. Artificial long days and daily contact with bucks induce ovarian but not oestrous activity during the non-breeding season in Mediterranean goat females

    Article • Animal Reproduction Science, May 2011, Elsevier

    José Luis Guzmán

  44. The Role of Nutrition in the Regulation of Luteinizing Hormone Secretion by the Opioidergic, Dopaminergic, and Serotonergic Systems in Female Mediterranean Goats1

    Article • Biology of Reproduction, March 2011, Oxford University Press (OUP)

    José Luis Guzmán

  45. Artificial long days in addition to exogenous melatonin and daily contact with bucks stimulate the ovarian and oestrous activity in Mediterranean goat females

    Article • animal, January 2011, Elsevier

    José Luis Guzmán

  46. Effect of artificial long days and/or melatonin treatment on the sexual activity of Mediterranean bucks

    Article • Small Ruminant Research, October 2010, Elsevier

    José Luis Guzmán

  47. Melatonin concentrations in the two jugular veins, and relationship with the seasonal reproductive activity in goats

    Article • Theriogenology, July 2010, Elsevier

    José Luis Guzmán

  48. Effect of melatonin implants on sexual activity in Mediterranean goat females without separation from males

    Article • Theriogenology, October 2009, Elsevier

    José Luis Guzmán

  49. Effect of artificial vs. natural rearing on milk yield, kid growth and cost in Payoya autochthonous dairy goats

    Article • Small Ruminant Research, June 2009, Elsevier

    José Luis Guzmán

  50. Effects of season and feeding level on reproductive activity and semen quality in Payoya buck goats

    Article • Theriogenology, May 2009, Elsevier

    José Luis Guzmán

  51. Influence of kid rearing systems on milk yield, kid growth and cost of Florida dairy goats

    Article • Small Ruminant Research, February 2009, Elsevier

    José Luis Guzmán

  52. Nutrition level and season of birth do not modify puberty of Payoya goat kids

    Article • animal, January 2009, Elsevier

    José Luis Guzmán

  53. Effect of plane of nutrition on seasonality of reproduction in Spanish Payoya goats

    Article • Animal Reproduction Science, July 2005, Elsevier

    José Luis Guzmán

  54. Characterization of semi-extensive goat production systems in southern Spain

    Article • Small Ruminant Research, February 2003, Elsevier

    José Luis Guzmán

  55. Effect of hygiene-sanitary management on goat milk quality in semi-extensive systems in Spain

    Article • Small Ruminant Research, January 2003, Elsevier

    José Luis Guzmán