莆田黑鸭(蛋鸭)主要经济性状遗传参数的估测

Estimation on Major Economic Character Hereditary Parameter of Putian Black Duck (Egg Duck)

采用同胞相关法估测了莆田黑鸭第三世代选育群的开产日龄、开产体重、开产蛋重，以及２４０日龄、３００日龄和５００日龄三个阶段的产蛋数、蛋重和体重等１３个性状的遗传力，并估测了主要性状间的相关。结果表明：各阶段产蛋数的遗传力较高，各阶段蛋重的遗传力较低，体重和开产日龄等性状遗传力中等。同时还表明；各阶段产蛋数之间呈强的遗传和中等表型正相关；蛋重之间均呈强的遗传和中等表型正相关；３００日龄产蛋数与开产日龄呈强的遗传和表型负相关；３００日龄蛋重与同期体重呈强遗传正相关和中等表型正相关。开产体重与３００日龄蛋重呈强遗传和表型正相关。开产蛋重与３００日龄蛋重呈强遗传和表型正相关。这些参数为蛋鸭的选育提供依据。

This study estimated heritability of 13 characters in third generation of Putian Black Ducks using method of sib correlation analysis.It also estimated correlation among major characters.The result showed:Heritablities of egg number in Various periods was high,egg weight was low.Body weight and first laying age had middlle heritability.Egg number and egg weight in various periods were positively and highly correlated with hereditary and middlingly correlated with phenotype.Egg number at 300 days and first laying ages were negatively correlated with hereditary and phenotype.Egg weight ay 300 days and body weight in the same period were positively correlated with hereditary and middlingly correlated with phenotype.