Santos Jiménez, ZurisadayEncinas Cerezo, TeresaMorales Cruz, Juan LuisGuerrero Gallegos, Hugo ZurielGonzález Ávalos, RamiroGuillén Muñoz, Juan M.González de Bulnes López, AntonioMartínez Ros, PaulaProducción Científica UCH 2022UCH. Departamento de Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos2023-05-182023-05-182022-11-28Santos-Jimenez, Z., Martínez-Ros, P., Encinas, T., Morales-Cruz, J. L., Guerrero-Gallegos, H. Z., Gonzalez-Avalos, R., Gonzalez-Bulnes, A. & Guillen-Muñoz, J. M. (2022). Ovarian response and fertility after short-term Progestagen/eCG treatments are compromised in nulliparous sheep during non-breeding season. Veterinary Sciences, vol. 9, i. 12 (28 nov.), art. 663. DOI: https://doi.org/10.3390/vetsci91206632306-7381 (Electrónico)http://hdl.handle.net/10637/14284Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2306-7381/9/12/663The objective of this investigation was to determine the ovarian response, fertility, and prolificacy of nulliparous sheep when compared to multiparous sheep after a short-term (7 days) CIDR/eCG treatment which was administered during the non-breeding season. All the multiparous sheep, whereas only 54% of the nulliparous ewes, showed signs of estrus. However, 81.8% of the multiparous sheep and 100% of the nulliparous ewes ovulated. Fertility was also low after short-term progesterone treatments during the anestrous season in maiden sheep (30.8 vs. 72.7% in multiparous ewes). Such results indicate significant differences in the response to CIDR/eCG protocols for induction and synchronization of estrus and ovulation between nulliparous and multiparous sheep during the non-breeding season.application/pdfenopen accessOvejas - Reproducción.Ovejas - Cría y explotación.Estro.Sheep - Breeding.Progesterone - Therapeutic use.Progesterona - Uso terapéutico.Sheep - Reproduction.Estrus.Artículohttps://doi.org/10.3390/vetsci9120663https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es