NILAI HERITABILITAS DAN KORELASI GENETIK SIFAT PERTUMBUHAN DARI SILANGAN AYAM LOKAL DENGAN AYAM BANGKOK

Abstract

The research conducted to estimate the heritability value and genetic correlation of growth traits of crossbred F (indigenous hens X Bangkok cocks) were done over 28 weeks. Five groups of pen mating poultry were used in which one cock and five hens were used for each group. Therefore, there were 5 cocks and 25 hens as parent stock and 152 crossbred F. Variables of the research were body weight of DOC, body weight of 4^th weeks and 8^th weeks. The variations of body weight by sex were eliminated by transforming the female body weight to male body weight using correction factor. Estimation of heritability value (h²) used an anova of nested design method. Estimation of genetics correlation (r_G) used an  ancova of nested design. Results of heritability estimates and genetic correlation showed that the h² was 0.13 for Doc body weight, 0. 67 for 4^th weeks, and 0,59 8^th weeks. The r_G was 0.89 for DOC to ⁴th week body weight, and 0.55 for DOC to 8^th week body weight