肉用鷄 選拔에 關한 硏究

Study on the Selection of Broiler Breed

The study was carried out to investigate the efficient selection method for the improvement of growth rate of broiler breed. Eight hundred chicks from the straight breed of White Cornish and White Plymouth Rock were used for this study. The heritabilities and genetic correlations were estimated for body weight, breast angle, keel length and shank length and, various selection indexes were calculated with body weight, breast angle, keel length and shank length at 4, 6 and 8 week of age. Based on the results of this study, index selection with body weight, breast angle and keel length at 6 weeks of age was most efficient for the improvement of growth rate of broiler breed.