233 Estrus Response and Pregnancy Rates of Beef Replacement Heifers Enrolled in Two Fixed-time Artificial Insemination Protocols, with or Without Pre-synchronization

Abstract Pre-synchronization strategies with prolonged exposure to exogenous progesterone have the potential to alter estrus expression and improve fertility in replacement beef heifers. The objective of this study was to evaluate the estrus response and pregnancy rate of beef heifers enrolled in tw...

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Veröffentlicht in:	Journal of animal science 2021-11, Vol.99 (Supplement_3), p.125-126
Hauptverfasser:	Mercadante, Vitor R G Rodrigues Gomes, Lamb, G Cliff C, Oosthuizen, Nicky, Wege Dias, Nicholas W, Pancini, Stefania, Haines, Hannah, Currin, John, Clark, Sherrie, Stewart, Jamie L, Pent, Gabriel J, Holton, Matthew P, Davis, Dylan B, Hernandez, Shane R R, Stewart, R Lawton, Fontes, Pedro L
Format:	Artikel
Sprache:	eng
Schlagworte:	Artificial insemination Beef Body weight Carbon monoxide Estrus Fertility Gonadotropin-releasing hormone Injection Pregnancy Progesterone Prostaglandin F2a Prostaglandins Reproduction (biology) Synchronism Synchronization
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