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Título : Use of GnRH for synchronization of the follicular wave in assisted reproductive technologies in sheep : a preliminary study
Autor : Añó Perelló, Aina.
Santos Jiménez, Zurisaday.
Encinas Cerezo, Teresa.
Martínez Ros, Paula.
González Bulnes, Antonio.
Materias: Estro.Estrus.Sheep - Generative organs.Ovejas - Reproducción asistida.Sheep - Reproductive technology.Reproducción asistida en los animales.Hormonas sexuales.Hormones, Sex.Ovejas - Aparato genital.Reproductive technologie in animals.
Fecha de publicación : 16-jul-2020
Editorial : MDPI
Citación : Año-Perello, A., Santos-Jimenez, Z., Encinas, T., Martinez-Ros, P., Gonzalez-Bulnes, A. (2020). Use of GnRH for synchronization of the follicular wave in assisted reproductive technologies in sheep: a preliminary study. Animals, vol. 10, i. 7 (16 jul.), art. 1208. DOI: https://doi.org/10.3390/ani10071208
Resumen : The present study aimed to set up a short-term protocol for synchronization of follicular wave emergence in sheep, concomitant with estrus synchronization, which would improve ovarian response in assisted reproductive technologies. Administration of a single GnRH dose, concomitant with the insertion of a progesterone-loaded CIDR device, caused regression of gonadotrophin-dependent follicles 4 mm in all the GnRH-treated sheep and in around 80% of the controls treated only with CIDR (p < 0.05). Similar percentages of ewes lost all follicles (around 70%) or only the largest one (around 30%) in both groups. Hence, 54.1% and 70% of the sheep lost all large follicles and initiated a new follicular wave in the control and GnRH groups, respectively (p < 0.05). The remaining sheep showed follicles that were still not dependent of luteinizing hormone (LH). So, in fact, all the sheep had non-dominant follicles after treatment. In conclusion, a treatment including GnRH at CIDR insertion would o er a time- and cost-e cient protocol for inducing follicular turnover and synchronizing a new follicular wave at any stage of the estrous cycle.
Descripción : Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2076-2615/10/7/1208
Este artículo pertenece al número especial "New technologies in ruminant breeding".
URI : http://hdl.handle.net/10637/12502
Derechos: http://creativecommons.org/licenses/by/4.0/deed.es
ISSN : 2076-2615 (Electrónico).
Aparece en las colecciones: Dpto. Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos

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