摘要
【目的】旨在揭示蛋鸡早期生长性状、40周龄体尺性状和72周龄屠宰性状3组性状间的相互关系。【方法】选取利用东乡青壳蛋鸡和白来航鸡构建的F2代资源群体母鸡1 186只,采用简单相关分析法和典型相关分析法对3组性状间25个变量进行分析。【结果】简单相关分析的结果表明:25个变量间共有284对存在极显著简单相关(P<0.01),多数相关系数小于0.5。典型相关分析的结果表明:早期生长性状与40周龄体尺性状、早期生长性状与72周龄屠宰性状和40周龄体尺性状与72周龄屠宰性状3组性状间第一典型相关系数分别为0.726、0.826和0.741,均达到极显著水平(P<0.01),分别占两组性状间总相关信息量的96.3%、96.4%和86.5%。在3组性状间起主要作用的性状有18周龄体重、开产体重、胫围、体斜长、屠体重和爪重。【结论】典型相关分析比简单相关分析能更准确、全面地反映蛋鸡早期生长性状、40周龄体尺性状和72周龄屠宰性状3组性状间的相关关系,为蛋鸡的选育提供依据。
[Objective] This experiment was conducted to investigate the correlations between early growth traits, body measurement traits at 40th week and slaughtering traits at 72nd week of laying hens. [Methods] We selected 1 186 laying hens of the F2 resource population that was developed by reciprocal crosses between Dongxiang chickens （DX）and White Leghorn （WL）. The correlations between the 3 groups were analyzed by simple correlation analysis and canonical correlation analysis. [Results] The simple correla- tion analysis showed that a total of 284 pairs of traits were highly significant simple correlation between 25 variates （P〈0.01）, and most correlation coefficients were below 0.5. The canonical correlation analy- sis showed that the first canonical correlation coefficients between early growth traits and body mea- surement traits at 40th week, early growth traits and slaughtering traits at 72nd week, body measure- ment traits at 40th week and slaughtering traits at 72nd week were 0.726, 0.826 and 0.741 （P〈0.01）, accounting for 96.3%, 96.4% and 86.5% of the total correlation, respectively. The main traits of the canonical correlation coefficients in 3 groups were the weight of 18 weeks, the body weight at first egg, shinbone girth, body steep length, carcass weight and the weight of feet. [Conclusion] The results indicated that canonical correlation analysis could reflect the correlation between traits of 3 groups than simple correlation analysis more accurately, and benefit for the breeding and selecting of laying hens.
出处
《四川农业大学学报》
CSCD
北大核心
2016年第3期359-364,共6页
Journal of Sichuan Agricultural University
基金
现代农业产业技术体系建设专项资金国家蛋鸡产业技术体系岗位科学家任务(CARS-41-K02)
江苏省农业科技版主创新资金项目(CX(16)1008)
扬州市科技计划项目(YZ2014148)
关键词
蛋鸡
早期生长性状
40周龄体尺性状
72周龄屠宰性状
典型相关分析
laying hens
early growth traits
body measurement traits at 40th week： slaughter traits at 72nd week
canonical correlation analysis
