TESTING SOME TREATMENT REGIMENS FOR ANESTRUS IN DAIRY COWS AT SAO DO UNIT - MOC CHAU MILK JOINT STOCK COMPANY

Abstract

The results of this study on anestrus situation in cows at Sao Do Unit, Moc Chau Milk joint stock company showed that bovine anestrus is caused by diseases such as underactive ovarian function, residual corpus luteum and cystic ovaries. These diseases tended to increase with parity; in which, the disease of underactive ovarian function mainly caused anestrus in dairy cows. The use of hormones in the treatment of anestrus in dairy cows has shown good results and has improved fertility. The disease treatment of underactive ovarian function by CIRD with PGF2a and GnRH reached 89.47% of oestrous cows and 79.41% of pregnant cows. Treatment of cystic ovarian disease in GnRH and PGF2α resulted in 91.66% of oestrous cows and 90.09% of pregnant cows. Treatment of residual corpus luteum disease with PGF2a obtained 80% of oestrous cows and 83.33% of pregnant cows. All experimental regimens resulted in higher estrus and pregnancy rates after insemination than those in the control group. The addition of gonadotropic hormones at appropriate times has helped increase the estrous rate and pregnancy rate in dairy cows, increasing economic efficiency for farmers.