摘要
试验旨在探讨生态因子对中国地方乌骨鸡的体量性状及繁殖性状的影响,分析性状间的相关关系,揭示其内在联系。对中国17个地方乌骨鸡品种的9个体量性状和5个繁殖性状分别与其产区的4个生态因子进行了典型相关分析(CCA)。结果表明,生态因子和体量性状间的第1个典型相关系数为0.992(P<0.01),贡献率为83.368%,第2个典型相关系数为0.953(P<0.01),贡献率12.566%,说明这两组性状间的相关性主要是由年日照时数、无霜期和胸宽之间密切相关引起的,年日照时数越长,无霜期就越长,乌骨鸡的胸宽就越大;生态因子和繁殖性状间的第1个典型相关系数为0.867(P<0.01),贡献率60.797%,第2个典型相关系数为0.754(P<0.01),贡献率为26.496%,说明这两组性状间的相关性主要是由年日照时数和平均开产日龄之间密切相关引起的,两者是正向趋势,即年日照时数越长,乌骨鸡的平均开产日龄也就越晚。本研究结果为乌骨鸡的遗传育种与繁殖提供了参考依据。
The objective of this study was to investigate the effect of climatic traits on body size traits and reproductive performance in Chinese native Black-bone chicken breeds using canonical correlation analysis.In this study,canonical correlation analysis（CCA）was applied to estimate the relationship between local climatic traits and body size traits（9traits）,climatic traits（4traits）and reproductive performance（5traits）17Chinese native Black-bone chicken breeds.The result of climatic traits and body size traits was that the first canonical correlation coefficient was 0.992（P〈0.01）,which accumulative pct represented 83.368%for the total correlation information.The second canonical correlation coefficient was 0.953（P〈0.01）,the value of pct was 12.566%,It showed that the correlation between the two sets of traits mainly by annual sunshine hours,frost-free and chest width closely related to the cause,the longer annual sunshine hours,the longer frost-free season,the greater chest width of Black-bone chicken.The result of climatic traits and reproductive performance was that the first canonical correlation coefficient was 0.867（P〈0.01）,the value of pct was 60.797%.The second canonical correlation coefficient was 0.754（P〈0.01）,the value of pct was 26.496%,The results from CCA indicated that the longer annual sunshine duration,the longer frost-free season,the wider of chest breadth,the later average of age at first egg.The research provides reference basis for genetic breeding and reproduction on Black-bone chicken.
出处
《中国畜牧兽医》
CAS
北大核心
2015年第11期3044-3049,共6页
China Animal Husbandry & Veterinary Medicine
基金
南阳师范学院专项项目(70350
ZX2013022)
关键词
生态因子
中国乌骨鸡
体量性状
繁殖性状
典型相关分析
climate traits
Chinese native Black-bone chicken breeds
body size traits
reproductive traits
canonical correlation analysis
