Manipulation of Fertility in Crossbred Dairy Cattle Using Controlled Internal Drug Release Device Combined With Prostaglandin and Equine Chorionic Gonadotrophin
Abstract:Abstract:Simplifying and improving our understanding of the protocols for inducing or synchronizing estrus is important for improving management of dairy cattle. This study evaluated the estrus response and conception rate of crossbred (Holstein Friesian X Zebu) dairy cows (n=75) and heifers (n=47) assigned to a 10-day controlled internal drug release (CIDR) deviceprostaglandin F2-alpha (PGF2α) -equine chorionic gonadotrophin (eCG) based estrus synchronization protocol. Animals were assigned to three groups (a… Show more
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