摘要
直接影响蛋鸡饲料转化率性状的因素包括采食量、平均蛋重和产蛋数。本试验测定了60个家系600只矮小型蛋鸡产蛋高峰期和产蛋后期的相关性状,计算产蛋高峰期各性状的遗传力和遗传相关。结果表明,日耗料和平均蛋重遗传力分别为:0.574和0.364;总蛋重、产蛋数和料蛋比的遗传力较低,分别为0.079,0.042和0.150。料蛋比与日耗料为较高的遗传正相关,而与平均蛋重、总蛋重和产蛋数均为弱正相关。产蛋高峰期和产蛋后期各性状的相关性为中等。
The daily feed intake,egg weight and egg number can impact feed conversion ratio of layers.In this experiment,the data were collected from 600 dwarf layers during the laying peak and late laying period.The heritabilities of daily feed intake and egg weight were 0.574 and 0.364;while the heritability of total egg weight,egg number and feed conversion ratio were 0.079,0.042 and 0.150.Feed conversion ratio had high positive genetic correlation with daily feed intake,while small correlation with total egg weight,egg production and egg number.The correlation coefficients between laying peak and late laying periods in above traits were moderate.
出处
《中国家禽》
北大核心
2011年第15期13-15,共3页
China Poultry
基金
国家现代蛋鸡产业技术体系(nycytx-41)
长江学者和创新团队发展计划
关键词
矮小型蛋鸡
遗传参数
料蛋比
dwarf layer
genetic parameters
feed conversion ratio
