PENGARUH PERBEDAAN RUMPUN SAPI DONOR LIMOUSIN DAN FRIESIAN HOLSTEIN (FH) TERHADAP RESPONSE RATE DAN RECOVERY RATE EMBRIO

The one of technic to improve the genetic quality of livestock in Indonesia
is by utilising reproductive technology such as Embryo Transfer (TE). Embryo Transfer (TE) is a reproductive technology used in livestock breeding programmes by maximising the use of superior female parent breeds and superior males to increase livestock productivity in both quantity and quality. Superovulation is one of the steps in the embryo transfer programme that involves giving hormones to female cows to increase the number of ovums that are ovulated so as to produce embryos with high potential for survival. The purpose of this study was to describe the differences in response rate and recovery rate of Limousin and Friesian Holstein (FH) embryos. This study used 34 cows, namely 8 Limousin cows and 26 Friesian Holstein (FH) cows. The research started from the selection of donor cows, with superovulation where the stages will go through the first stage is synchronisation of lambing, superovulation, artificial insemination, flushing (embryo harvest), and embryo evaluation. The response rate percentage of Limousin cattle was 100%, FH cattle 73,7%. Recovery rate in Limousin cattle 79,6% and FH
cattle 77,5%.