Potential of Bali Cattle: Breeding Value of Bull on Weaning Weight, Yearling Weight and Body Weight Gain

Abstract

The performance of Bali cattle in the production of meat has not been maximal. The purpose of the research was to 1). Study potential of Bali bull through breeding value; 2). Analyze of direct and indirect selection response. A total of 1,284 data of weaning weights, yearling weights and body weight gain from 99 cows with 2-7 records were used to analyze the breeding values of bull and selection responses. Estimation of variance and co-variance components of genetic and environmental, and heritability is obtained using the Variance Component Estimation program. PEST program is used to estimate breeding value of bull. Selection response is estimated based on heritability, standard deviation and selection intensity. The results showed that of 28 bulls tested, 53.57% had a positive breeding value of weaning weight; 42.86% had a positive breeding value of yearling weight and 53.57% had a positive breeding value of body weight gain. The direct selection response of weaning weight, yearling weight and body weight gain were 0.26 kg, 1.17 kg and 0.38 kg, respectively, whereas the indirect selection response of weaning weight-yearling weight and weaning weight-body weight gain were 0.21 kg and 0.04 kg respectively.