长白猪主要选育性状间的典型相关分析

对长白猪的3组14个性状进行了典型相关分析。其中生长速度包含4个性状，体尺包含6个性状，膘厚和外貌评分等包含4个性状。结果表明，生长速度与体尺性状的第一和第二典型相关系数达极显著水平，分别为0.647 8和0.353 1，占总相关的96.52%。生长速度与膘厚和外貌评分等性状的第一和第二典型相关同样达极显著水平，分别为0.925和0.241 7，占总相关的99.9%。体尺与膘厚和外貌评分等性状只有第一个典型相关系数达极显著水平，其典型相关系数为0.328 7，占总相关的75.59%。分析还表明在这些性状中起主要作用的性状有X1（二月龄体重）、X3（测定结束体重）、X7（胸围）、X10（腿臀围）、X11（背膘厚）、X12（校正膘厚）。

Canonical correlation analysis of main breeding traits for Landrace

The analysis of canonical correlation for 14 traits in 3 groups was carried out in the study. The growth and development traits composed of 4 traits, body size 6 traits and fat thickness and appearance 4 traits. The results showed that the first and second coefficients of canonical correlation for the growth and development with the body size, as well as the growth and development with the fat thickness and appearance, was highly significance. The canonical correlation coefficients were 0.647 8 and 0.353 1 with 0.925 and 0.241 7, they represented 96.52% and 99.9% respectively for the total correlation between 2 groups. It was only the first coefficients of canonical correlation highly significance between the body sizes and the fat thickness with appearance, it was 0.328 7 and expressed about 75.59% for the total correlation. The results also showed that the body weights for 2 months and end of the test, chest circumference, ham circumference, back fat thickness and adjusted back fat thickness were the main traits in the study.