番鸭生长性状遗传参数的估测

Genetic Parameter Estimation of Growth Traits in White Muscovy Duck

对白羽番鸭RF系各阶段的生长性状进行表型分析和遗传参数估计。结果,各阶段的体重遗传力较高,日增重的遗传力中等,而0～70日龄料肉比和0～84日龄料肉比遗传力偏低。同时还表明,各阶段体重之间和日增重之间存在较强的正遗传相关,而各阶段日增重与料肉比之间存在不同程度的负遗传相关。生长性状遗传相关的变化范围在-0.824～0.912。

The phenotypic and genetic parameters of growth traits of white muscovy duck RF line were estimated.The results showed that heritability of body weight at every stage was high,and daily gain at different period was medium,feed efficiency at 70(or 84)days age had the lower heritability.There were highly positive correlations in body weignt,daily gainat different stages,and negative correlations between daily gain and ratio of meat to feeding The genetic correlations of growth traits were from-0.824 to 0.912.