Induction of estrus using PGF_(2 alpha) in non-descript hilly goats

摘要

The present study was aimed to evaluate the efficacy of PGF_(2 alpha) injection on induction of estrus in 48 healthy hill goats. The PGF_(2 alpha) (Dinoprost tromethamine-7.5 mg/goats) was injected intramuscularly in half of the goats (n=24) and rest24 goats were kept as control and they were exposed to buck only. The behavioural estrus was observed following buck parading twice only. The non-responders were injected with another similar dose of PGF_(2 alpha) 10-11 days after the first one. The first and second PGF_(2 alpha) injection induced estrus in 9/24(37.5%) and 9/15(60%) goats, respectively with an overall induction of estrus in 18/24 goats (75%) in comparison to only 5/24 (21%) goats in control. Most of the goats (11; 61.11%) exhibited estrus within 72 hours with an average of 108.22±27.39 and 95.77±22.26 hrs to first and second injection of PGF_(2 alpha), respectively. The goats observed in estrus were served to buck of high vigour on two occasions leading to pregnancy in 16/18 (88.88%)goats. The results indicated that PGF_(2 alpha) could be used effectively to induce estrus in hilly goats with high fertility.