Efficiency of Different Estrus Synchronization Protocols in Surti Goats

Abstract

A total of 54-adult non-pregnant Surti goats were selected and randomly divided into three equal groups (n=18 each). Two groups were put under estrus synchronization protocols, viz., Double PGF2α protocol (Inj. Dinoprost 12.5 mg, i/m, 11 days apart with natural breeding from 72-144 hours of second PG inj.) and NC Synch protocol (PG 12.5 mg - GnRH 0.004 mg - PG 12.5 mg - GnRH 0.004 mg on days 0, 8, 15 and 18, respectively with natural breeding during 19-21 days) using standard management practices and 3rd group was kept as untreated control. All the goats were dewormed before initiation of treatment. The estrus response (100% each), duration of estrus, pregnancy rate at 60 days post-breeding (55.55 vs. 44.44 and 55.55 %), and kidding rate (100% each) were statistically same in control and synchronized goats. However, twins were in almost 50% of kidding under the NC Synch group compared to 25% in Double PG protocol and 40% in the control group, with almost 100% kid survival till weaning. Thus, NC Synch Protocol was better in terms of pregnancy rate (55 vs. 44%) and fecundity (1.5 vs. 1.0) over double PGF2α protocol, and even untreated control goats.