京白父母代及商品代鸡生产性能观测

OBSERVATIONS AND MEASUREMENT OF PERFORMANCE FOR JINGBAI CHICKEN PARENTAL AND COMMERCIAL STOCKS

参照“京白鸡饲养管理标准”,在乐都县种鸡场、大通县鸡兔良种场对京白父母代和商品代鸡(京白823)的生产性能测试结果:父母代鸡的见蛋日龄为123—134天,72周龄饲养日产蛋量为212—216枚,种蛋受精率为95％—95.3％,受精蛋孵化率为80％—81.2％,饲料转化率(蛋料比)为1:2.56—1:2.9;商品代鸡的见蛋日龄为127—129天,72周龄饲养日产蛋量为204—219枚,蛋料比为1:2.83—1:3.04,其产蛋量高于省内同级鸡场及群众饲养的其它鸡种。

Referring to the Standards of Feeding and Management of Jingbai Chicken,at Le Du Breeding Chicken Farm and Da Tong Fine Chicken and Rabbit Farm, we tested performance of the parental and commercial stock of Jingbai Chicken(Jingbai 823). The results were showed as follows:The age-at-first-laying of parental stock is 123-134 days,egg production to 72nd feeding week is 212-216,fertility rate of the breeding egg is 95%-95.3%,hatchability of the fertilized egg is 80%-81.2%, egg-feed ratio 1: 2.56-1:2.9;the age-at-first-laying of commercial stock 127-129 days,egg production to 72nd feeding week 204-219,egg-feed ratio 1: 2.83-1: 3.04,its egg production is more than the same level chicken farm or other chicken breeds fed in farmer families of our provinee.