Estimation of genetic parameter for post - weaning growth traits in Makuei sheep breed

(Co)Variance components and genetic parameters were estimated by restricted maximum likelihood (REML) procedure using an animal model for six (W6), nine (W9), twelve (W12) months in Makuei sheep Breed. The effects of year of birth, season of birth except for W12, sex, type of birth and dam age on all growth traits were significant and were included in the model as fixed effects. For (W6) model 2 for (W9) and (W12) and model 1 selected as suitable model. Direct heritability coefficients for the studied traits based on appropriate model were 0.31, 0.43(0.05), 0.33(0.09) respectively. Direct additive genetic correlations between body weight at various age were positive and ranging from 0.91 to 0.97. Phenotypic correlations between all triats were positive and ranged from 0.69 to 0.80.