The Estimate of Genetic Parameters for Body Weight of Naked-neck Chicken in Generation 1
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Abstract
The purpose of this study was to estimate genetic parameters for body weight in Naked-neck chicken in generation 1 using of the data birth weight, 4, 8, 12, and 16 weeks from 554 chickens. Model of analysis took in to account fixed effects of hatch and sex. Variance components from multivariate trait analysis were estimated by average information restricted maximum likelihood (AI-REML) and breeding value was also estimated under best linear unbiased prediction (BLUP). It is found that heritability estimates of body weight at birth, 4, 8, 12, and 16 weeks were 0.986, 0.281, 0.370, 0.340, and 0.343, respectively. Genetic correlations of body weights were ranged from 0.249 to 0.992 and phenotypic correlations were ranged from 0.210 to 0.920. The estimates of estimated breeding value (EBV) for body weight at birth, 4, 8, 12 and 16 weeks of age were ranged from -10.63 to 13.87, -60.40 to 90.98, -143.36 to 218.06, -204.95 to 314.61, and -292.66 to 411.23, respectively. Therefore, all body weight traits can be improved by selection because the magnitude of heritability were moderate.
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