Does combining estradiol cypionate and GnRH for ovulation induction in recipient cows increase pregnancy rate after timed embryo transfer?
Anim. Reprod. (Online)
; 19(3): e20220067, set. 2022. tab, graf
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| ID: biblio-1403207
Biblioteca responsable:
BR68.1
ABSTRACT
Estradiol cypionate (EC) or GnRH have been widely used for ovulation induction in timed embryo transfer (TET). EC administration increases the proportion of cows that show estrus, whereas GnRH promotes more synchronized ovulations. The aim of the present study was to evaluate the potential beneficial effects of combining EC and GnRH in TET. In experiment 1, no difference was observed on serum progesterone concentrations on Day 6 and 13 after GnRH treatment between GnRH and EC+GnRH groups. In experiment 2, pregnancy per embryo transfer (P/ET) did not differ (p = 0.69) between GnRH (62.8%) and EC+GnRH (58.7%) groups. In conclusion, combining EC and GnRH for ovulation induction does not increase progesterone secretion and pregnancy rate after TET in cattle.(AU)
Palabras clave
Texto completo:
1
Base de datos:
VETINDEX
Asunto principal:
Inducción de la Ovulación
/
Hormona Liberadora de Gonadotropina
/
Estradiol
Límite:
Animals
/
Pregnancy
Idioma:
En
Revista:
Anim. Reprod. (Online)
Año:
2022
Tipo del documento:
Article