摘要： 对豫州褐壳蛋鸡Ⅲ系采用系祖间轮配的选配方法,经过连续个世代的选育,开产日龄推迟5.72 d,开产平均蛋重减少0.87 g,72周龄平均蛋重增加2.82 g、蛋数增加8.62枚,蛋品质维持在较高水平,蛋壳颜色变深.说明对已育成的纯系采用系祖间轮配的选配方法,可以维持并提高其生产性能.
关键词:
豫州褐壳蛋鸡,
综合选择指数,
系祖轮配,
生产性能
Abstract: Rotation breeding of line progenitor was adopted in line Ⅲ of Yuzhou egg-brown layer.Selected successively for three generations, layers' age at first laying wasput off for 5.65 d,and average egg weight of 72 week-old was increased by 2.82 g, and egg number was added by 8.62.Egg quality maintained higher leveLand shelLcolor became browner.It indicated that rotationaLbreeding of line progenitor in cultivated pure strain could keep and improve their production performance.
Key words:
Yuzhou egg-brown layer ,
Synthetic selection index ,
Rotation breeding of line progenitor ,
Pro-duction performance
中图分类号:
宋素芳, 康相涛, 李明, 王彦彬. 系祖轮配对维持并提高豫州褐壳蛋鸡Ⅲ系生产性能的研究[J]. 华北农学报, 2003, 18(2): 103-105. doi: 10.3321/j.issn:1000-7091.2003.02.028.
SONG Su fang, KANG Xiang tao, LI Ming, WANG Yan bin. Discussion and Practice of Rotational Breeding of Line Progenitor on Maintenance and Improvement of Production Performance of Line Ⅲ of Yuzhou Egg-brown Layer[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 103-105. doi: 10.3321/j.issn:1000-7091.2003.02.028.