Pengaruh Pemberian GnRH pada Sapi Potong yang Mengalami Kawin Berulang (Repeat Breeding)

Repeat breeding is a condition in which cows have normal estrous cycles and been mated 3 times or more but are not pregnant. The incidence of repeat beef cattle can be detrimental to breeders terms time, that the calving period becomes longer so cannot give birth calves once year. Various ways deal with done, results optimal. This study was conducted determine effect Gonadotrophin Releasing Hormone (GnRH) breeding. A total fifteen were used this study. divided into groups 5 each. Cows estrus first group (as control group) only performed artificial insemination (AI) without GnRH injection. In second third groups, after AI, they injected at AI time 3-4 days dose ml (Fertagyl®, 500 µg gonadorelin) intramuscularly. pregnancy examination carried out three months later recorded. data obtained analyzed descriptively quantitatively using Chi-Square statistical analysis. analysis showed there differences rate (control) cow group, 20%, 80%, 60% respectively. Based on analysis, significant difference (P <0.05) between groups. It concluded administration could increase had