Menchaca, AlejoMartin, Graeme B.González de Bulnes López, AntonioMartínez Ros, PaulaProducción Científica UCH 2020UCH. Departamento de Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos2020-12-122020-12-122020-03-01Gonzalez-Bulnes, A., Menchaca, A., Martin, GB. & Martinez-Ros, P. (2020). Seventy years of progestagen treatments for management of the sheep oestrous cycle: where we are and where we should go. Reproduction, Fertility and Development, vol. 32, i. 5 (mar.), pp. 441-452. DOI: https://doi.org/10.1071/RD184771031-36131448-5990 (Electrónico)http://hdl.handle.net/10637/11750Este artículo se encuentra disponible en la página web de la revista en la siguiente URL: https://www.publish.csiro.au/rd/RD18477This is the pre-peer reviewed version of the following article: Gonzalez-Bulnes, A., Menchaca, A., Martin, G.B. & Martinez-Ros, P. (2020). Seventy years of progestagen treatments for management of the sheep oestrous cycle: where we are and where we should go. Reproduction, Fertility and Development, vol. 32, i. 5 (24 jan.), pp. 441-452, which has been published in final form at https://doi.org/10.1071/RD18477.Este es el pre-print del siguiente artículo: Gonzalez-Bulnes, A., Menchaca, A., Martin, G.B. & Martinez-Ros, P. (2020). Seventy years of progestagen treatments for management of the sheep oestrous cycle: where we are and where we should go. Reproduction, Fertility and Development, vol. 32, i. 5 (24 jan.), pp. 441-452, que se ha publicado de forma definitiva en https://doi.org/10.1071/RD18477.The management of the ovine estrous cycle is mainly based on the use of exogenous hormones for mimicking (progesterone and its analogues) or manipulating (prostaglandin F2α and its analogues) the activity of the corpus luteum, combined with the application of other hormones mimicking the pituitary secretion of gonadotrophins (e.g.: equine chorionic gonadotrophin, eCG). These protocols have been applied without major change for decades but, now, there are two reasons to reconsider them: i) our greatly improved knowledge of the dynamics of ovarian physiology, following the application of transrectal ultrasonography, indicates that modification of the protocols may improve the yields; ii) increasing concerns about animal health and welfare, food safety and the environmental impact of the treatments, as evidenced by public opinion and therefore market forces. Here, we offer an overview of these issues, introduce an updated protocol, and suggest ways for future improvements of the protocols.application/pdfesopen accessArtificial insemination.Inseminación artificial en los animales.Prostaglandins - Therapeutic use.Sheep - Reproductive technology.Progesterone - Therapeutic use.Prostaglandinas - Uso terapéutico.Ovejas - Reproducción asistida.Progesterona - Uso terapéutico.Artículohttps://doi.org/10.1071/RD18477https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es