Synchronization Of Estrus Of Whitetail Deer And Other Select Cervids, Sheep & Goats

Abstract

Estrus synchronization in small ruminants is achieved by controlling the luteal phase of the estrous cycle during the breeding season or by inducing premature heat cycles during the anovulatory season. Anestous animals can be induced into cycling with hormonal treatment or manipulation of the environment. The most commonly used protocol for synchronization of heat in small ruminants involves the use of controlled internal drug release (CIDR) devices, intravaginal sponge impregnated with progestagens, equine chorionic gonadotropin (eCG), and prostaglandin. Prostaglandin based protocols are used during the breeding season. The sudden introduction of a male can also be used to induce and synchronize fertile heat in sheep and goats. Estrus induction and synchronization in deer use similar techniques. This article reviews some successful protocols used to induce heat, synchronize estrus, induce ovulation, and enhance ovulation in small ruminants and deer.