中国地方鸡生态因子和经济性状的相关性分析

试验旨在研究中国地方鸡品种生长所在地的生态因子和鸡的经济性状（体尺性状和屠宰性状）的相关性，探讨生态因子、体尺性状和屠宰性状3组性状之间的相关关系，揭示其内在联系。对中国107个地方鸡品种生长所在地的6个生态因子及其8个体尺性状、8个屠宰性状进行了简单相关分析和典型相关分析（CCA）。结果表明，生态因子和屠宰性状两组性状间的第1个典型相关系数为0.536（P < 0.01），贡献率55.046%，说明这两组性状间的相关性主要是由年平均气温和屠体重之间密切相关引起的，年平均气温越低，鸡的屠体重越高。生态因子和体尺性状两组性状间的第1个典型相关系数为0.679（P < 0.01），贡献率54.118%，纬度和胫围相关性最大，纬度越高，胫围越小；第2个典型相关系数为0.556（P < 0.05），贡献率28.251%，无霜期和龙骨长相关性最大，无霜期越长，龙骨长越长。体尺性状和屠宰性状两组性状间的第1个典型相关系数为0.901（P < 0.01），贡献率81.063%，说明这两组性状间的相关性主要是由龙骨长和屠体重之间密切相关引起的，龙骨长越长，鸡的屠体重越大。

Correlation Analysis of Ecological Traits and Economic Traits for Chinese Native Chicken Breeds

The objective of this study was to investigate the correlation of ecological traits on body size traits and economic traits (body size traits and slaughter traits) in Chinese native chicken breeds and reveal the essential connection of three group traits.In this study,simple correlation analysis and canonical correlation analysis (CCA) were applied to estimate the relationship between local 6 ecological traits and 8 body size traits,6 ecological traits and 8 slaughter traits,8 body size traits and 8 slaughter traits of Chinese native chicken breeds.The result of ecological traits and slaughter traits suggested that the first canonical correlation coefficient was 0.536 (P < 0.01),the value of pct was 55.046% for the total correlation information.It showed that the correlation between two sets of traits mainly by mean annual temperature and dressed weight closely related to the cause,the lower mean annual temperature,the heavier dressed weight.The result of ecological traits and body size traits suggested that the first canonical correlation coefficient was 0.679 (P < 0.01),the value of pct was 54.118%,for the total correlation information.It showed that the correlation between two sets of traits mainly by latitude and shank girth closely related to the cause,the higher latitude,the smaller shank girth.The second canonical correlation coefficient was 0.556 (P < 0.05),the value of pct was 28.251% for the total correlation information.It showed that the correlation between two sets of traits mainly by forst free period and chest bone length closely related to the cause,the longer forst free period,the longer chest bone length.The result of body size traits and slaughter traits suggested that the first canonical correlation coefficient was 0.901 (P < 0.01),the value of pct was 81.063% for the total correlation information.It showed that the correlation between two sets of traits mainly by chest bone length and dressed weight closely related to the cause,the longer chest bone length,the greater dressed weight.