贵农红羽褐壳蛋鸡选育报告

BREEDING OF A NEW CHICKEN STRAIN,GUINONG RED FEATHER BROWN SHELL LAYER

贵农红羽褐壳蛋鸡系以贵农黄蛋用系为基础，通过引进国外父母代蛋鸡高产基因，经建系扩群和杂交筛选育成的配套系。生产性能测定成绩为开产日龄１６２天，平均蛋重６１．８４ｇ，年产蛋数２４７．４３枚，总蛋重１５．３０ｋｇ，鲜蛋品质良好，蛋料比１∶２．８４，自别雌雄准确率９９．１％，均较亲本有较大幅度的提高。其环境适应性、鲜蛋品质和成鸡羽色等方面，明显优于国外蛋鸡品种。批量推广表明，饲养该鸡能获得较大的社会经济效益。

Guinong Red Feather Brown Shell Layer,a new layer strain with auto-sex discrimination system,was bred on the basis of Guignong yellow layer crossed to high laying parents from foreign countries,Then we selected and extended its group. Its main productive performance were as bellow:age of first egg: 162- days, arerage egg weight:61. 84g,annual egg production:247.43,total egg weight:15.30kg,ratio of egg to feed:1∶2.84,and the accuracy of automatic sexing discrimination:99.1 %,higher than its original parents.Its environmental adaptability,quality of fresh egg,and adult birds'feather color were also obviously better than the strains from foreign countries.Therefore, higher eonomic and social benefits could be expected from raising this strain.