Development of a GnRH-PGF2α-progesterone-based synchronization protocol with eCG for inducing single and double ovulations in beef cattle

Experiments were designed to investigate the effect of different doses and timing of an eCG treatment given during GnRH-based synchronization protocols on follicular dynamics and fertility in cattle. In Exp. 1, Angus heifers (n = 50) received a 7-d Ovsynch + progesterone protocol (on d 0, GnRH and p...

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Veröffentlicht in:	Journal of animal science 2014-11, Vol.92 (11), p.4935-4948
Hauptverfasser:	Martinez, M F, Tutt, D, Quirke, L D, Tattersfield, G, Juengel, J L
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Breeding - methods Cattle - physiology Chorionic Gonadotropin - pharmacology Dinoprost - pharmacology Dose-Response Relationship, Drug Estrous Cycle - drug effects Estrus Synchronization - methods Female Fertility - drug effects Gonadotropin-Releasing Hormone - pharmacology Gonadotropins, Equine - pharmacology Male Ovarian Follicle - drug effects Ovulation - drug effects Ovulation - physiology Ovulation Induction - methods Ovulation Induction - veterinary Pregnancy Pregnancy Rate Progesterone - pharmacology
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