Genetic corre-lations between AFG and NE-300d,EW,NE-500d were-0. 56,-0.27 and-0.37 respectively,Therewas lower genetic correlation between EW and NE.

• 开产日龄与300日龄产蛋数、蛋重和500日龄产蛋数的遗传相关依次为：－0.；56，－0