“七五”国家蛋鸡选育攻关生产性能抽样测定总结

Report of Random Sample Test for Laying Performance in The "7.5" National Project of Egg-type Chicken Breeding

作为对国家“七五”攻关蛋鸡选育课题的总结,从1989年3月起在北京和牡丹江市分别对8个配套组合及2个引进鸡种对照组(巴布可克B300和星杂579)作了生产性能抽样测定。各组合由测定监督人作保密标志。测定过程尽可能做到随机化、标准化,测定条件符合一般生产条件。测定结果表明,京白鸡1组饲养日总蛋重达17.02kg、料蛋比为2.33,农昌1号2组的总蛋重达16.65kg,分别为白壳组和褐壳组中成绩最好的组合,超过了同测的引进鸡种水平,也比“六五”攻关的最好成绩有了明显的提高。分析显示,测定中存在比较明显的遗传与环境的互作。

Four chicken breeding units jointly carried out the '7.5' National project of Egg-type Chicken Breeding. As a conclusion, Random Sample Tests (RST) for laying performance were held in two test stations from May 1989 till August 1990. Eight entries of commercial layers and two controls of imported layers(Starcross 579 and Babcock B-300) took part in the RST. For white egg layers, Beijing White Leghorn showed the best performance with egg mass 17.02 kg (H.D.) and feed comsumption 2.33. Among five brown groups, Nong Chang Nal was the leading layers and its egg mass (H.D.) was 16.65 kg. Analysis indicated that a significant genotype-station interaction existed, especially between type (white or brown) and station.