【摘要】 利用制订出的血液生化指标多辅助性状综合选择指数对淮南麻黄鸡进行了 1个世代的早期选择。测定了早期选择和直接选择 (家系选择 )母鸡的产蛋性能。结果表明 ,早期选择母鸡 5 0 0日龄饲养日产蛋量和总蛋量分别为 1 5 0 .47个和 6960 .76g,家系选择相应为 1 2 7.97个和 63 0 5 .3 1 g。早期选择 5 0 0日龄饲养日产蛋率为 45 .66% ,家系选择为 41 .0 2 % ,两者差异极显著 (P <0 .0 1 )更多还原

【Abstract】 The early selection of one generation for Huainan Spotted Black Yellow chicken by synthetic selection index of multisecondary traits on blood biochemical indexes were conducted.The laying performances of hens by early selection and direct selection (family seleciton) were tested.The results showed that the egg production and total egg weight at 500 feeding days (500 EPFD and 500 TEWFD) of hens were 150 47 eggs and 6 960 76 g for early selection and 127 97 eggs and 6 305 31 g for family selection.The laying rates at 500 feeding days (500 LRFD) of hens for early selection and family selection were 45 66% and 41 02%,respectively,the differences between early and family selection were significant (P<0 01).更多还原