Induction of estrus in Etawa crossbred goat by PGF_2α injection to ensures successfull artificial insemination

Goat farming has a great role in generating household income. Ampel Gading Sub-district of Malang regency has great Etawa Crossbred goat (CR) population to meet the demand from many areas of Indonesia and even foreign countries such as Malaysia. Since many goats have gone from this area, it may require a technology to improve breeding method to sustain its goat population. Therefore, this study aimed to investigate the effect of single-dose and double-dose of hormone PGF2α to improve estrus quality and increase pregnancy success rate in the CR at Ampel Gading Sub-District, Malang Regency. Seventy three CR doe were divided into three groups, i.e. group 1 Consited of 20 goats without hormone treatment, group 2 consisted of 33 goats and group 3consisted of 20 goats injected with hormone PGF2α each with single-and multiple-doses to synchronize estrus. Pregnancy evaluation was observed by non-return rate to estrous method (NRR). Results showed a single dose of PGF2α induced estrus in goats (96.97%) in 17 hours after injection. However, the high rate of estrus did not conceived in goats after given artificial insemination. The success rate of pregnancy in goats without treatment was higher (90%) compared to those with hormone treatment either single dose (87.87%)or double doses (75%).