Analysis of Nutritional and Genetic Factors on Repeated Mating Cases in Beef Cattle in Sorong Regency

Abstract

This study aims to evaluate the adequacy level of feed and to identify the breeds of beef cattle heifers that experience repeat breeding cases in Sorong Regency. Primary data were collected through direct interviews with beef cattle farmers in three districts: Aimas District, Mariat District, and Mayamuk District. Secondary data were obtained from the Sorong Regency Livestock Service. Sampling was conducted using a purposive sampling method, with a sample size representing 5% of the lowest livestock population. It was found that 7% of the medium-scale livestock population and 10% of the high-scale population experienced repeat breeding cases. The collected data were analyzed using correlation and regression analysis, where the total intake of dry matter (DM), protein, and metabolizable energy (ME) was correlated with the frequency of repeat breeding. The analysis results indicated that feed consumption had no significant effect on the incidence of repeat breeding. This was reflected in the non-significant p-values: total DM (0.064ns), total ME (0.832ns), and total protein (0.181ns). However, cattle breed was found to significantly influence the occurrence of repeat breeding. In conclusion, it can be stated that in Sorong Regency, the breed of beef cattle plays a role in increasing the risk of repeat breeding among heifers, whereas the adequacy of feed intake does not show a significant correlation with this reproductive disorder.