Induction and estrous synchronization during the non-breeding season in Saanen goats
Abstract
The purpose of this study was to perform the induction and estrous synchronization of Saanen goats in the non-breeding season. The study was conducted from July 2014 - April 2015 on 77 Saanen goats, aged between 1.5 to 5 years. The goats were divided into three experimental groups: in group I (n =37 goats) intravaginal sponge (Ovigest) containing 60 mg of MPA was left in the vagina for 14 days. Immediately after sponge removal the animals received two injections: prostaglandin (Prosolvin) at the dose of 0.75 mg (1 ml)/animal and PMSG hormone (Folligon) at the dose of 500 IU/animal. In group II (n=20) induction and estrous synchronization was performed using synthetic prostaglandin (Proliz - 1 ml containing 0.2 mg isopropyl ester of cloprostenol and 9 mg benzyl alcohol) at the dose of 0.5 ml/animal. The group III (n=20) was considered the control group and estrous synchronization was performed using fertile bucks. In group I the results showed that all goats expressed signs of estrous. The average value of the estrous interval was 33 hours and the average of estrous duration was 20 hours. The number of kids obtained in group I was 94, and prolificacy was P (%) = 2.54. In group II and III was not observed occurrence of estrous. Induction and estrous synchronization show economic benefits by shortening the time needed for pregnancy installation, possibility of births grouping, preparation and organization of mating, only if we use a hormone associated protocol and we rigorous respect therapy steps.
Keywords
