The present experiment was undertaken to study the efficacy of progesterone and GnRH in repeat breeding Deoni cows. Thirty two Deoni cows were selected and divided into four groups. Each group comprises eight animals. Group I cows were administered inj. Hydroxyprogesterone @ 250 mg on 5th day of artificial insemination, Group II cows were administered inj. GnRH @ 10 meg at the time of artificial insemination, Group III cows were administered inj. GnRH @ 10 meg on 5th day of artificial insemination and Group IV remains untreated served as control. The conception rate of groups I, II, III and IV was 50.00, 75.00, 62.50 and 25 percent, respectively. The conception rate of group II was higher than that of group I and group III. Thus the study reveals that the administration of GnRH at the time of artificial insemination improves the conception rate in repeat breeder Deoni cows.
展开▼
