SYNCHRONIZATION OF OVULATION USING DOUBLESYNCH PROTOCOL IN CROSSBRED CATTLE UNDER FIELD CONDITIONS

Abstract

The crossbred cattle (n=110) were randomly divided to receive either no treatment and were regular cycling
(group 1, n=10), and the remaining (group II, n=100) were pubertal heifers, repeat breeders and anestrous. The
animals were fed area specific mineral mixture @ 30 gm/d/animal for 45d and group II animals were subjected
to doublesynch protocol followed by FTAI. Body condition scores (BCS) was accessed and ranged 2.4-3.4 in all
the animals. Blood samples was collected for the estimation of plasma Beta hydroxy butyric acid (BHBA) and
the animals that failed to conceive to doublesynch had higher plasma BHBA. The conception rate was 54% in
synchronized compared to 40% in control group. Thus, doublesynch is a useful protocol to improve the conception
rate in infertile cattle under field condition.