Indonesia Conference Directory

Lower conception rate of cows in the tropics might be affected by low quality of semen collected from bulls consumed low quality food. This study was conducted to evaluate the conception rate of Bali cows inseminated with semen of the bulls supplemented with Moringa oleifera leaf (MOL) powder blocks. There were 26 Bali cows 3-4 years of age, non pregnant and having corpus luteum, used in this study. All animals were injected with 2 ml of PGF2α (juramate) to induce and to synchronize the estrous. They were divided into 2 groups, group 1 (P1, n=16) were inseminated with semen of bulls supplemented with MOL powder blocks. Group 2 (P0, n=10) were inseminated with commercially available semen. All cows were artificially inseminated 48 hours after the PGF injection. Pregnancy diagnosis were perfomed by rectal palpation 60 days after the insemination. The mean diffents between the two treatments were analyzed by chi-squared analysis. All animals in the two treatments came in oestrus after the PGF injection. Thirteen (13) out of 16 cows (81%) and 7 out of 10 cows (70%) detected in pregnant, respectively for P1 and P0. Although statistical analysis showed that there was not different between the two treatments (P>0.05), but economically, the treatment of P1 could increase 11% of conception rate. It can be concluded that the supplementation of MOL powder block could increase the conception rate of Bali cows.