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Position: Home > Articles > Correlation and path analysis on some growth traits of Xuanhe Pig Modern Journal of Animal Husbandry and Veterinary Medicine 2019 (9) 27-30

宣和猪部分生长发育性状的相关与通径分析

作  者：
李明丽;王孝义;张克忠;严达伟;董新星
单  位：
云南农业大学动物科学技术学院
关键词：
宣和猪;体重性状;体尺性状;相关分析;通径分析
摘  要：
利用八世代835头后备宣和猪的生长发育性能数据,对70日龄体重(X_1)、4月龄体重(X_2)、6月龄体长(X_3)、6月龄体高(X_4)、6月龄胸围(X_5)和6月龄体重(Y)6个性状进行了相关和通径分析,并在此基础上采用逐步回归法建立了估计6月龄体重的最优回归方程。结果表明:宣和猪的生长性能经过8个世代的选育后已达到较高水平;各生长性状间在表型值上都存在不同程度的相关,其中以6月龄体长与6月龄体高之间的相关程度最高(r=0.8753),6月龄体长与6月龄胸围之间的相关程度次之,相关系数为0.8708,而70日龄体重与6月龄体重间的相关程度最低(r=0.2614);本研究分析的6个性状间都呈正相关;估计6月龄体重的最优回归方程为:Y=3.1448-0.2583X_1+0.4296X_2+0.3767X_3+0.6026X_4-0.2275X_5。
译  名：
Correlation and path analysis on some growth traits of Xuanhe Pig
作  者：
Li Mingli;Wang Xiaoyi;Zhang Kezhong;Yan Dawei;Dong Xinxing;College of Animal Science and Technology, Yunnan Agricultural University;Animal Husbandry and Veterinary Bureau of Xuanwei City;
关键词：
Xuanhe pig;;Body weight;;Body size;;Correlation analysis;;Path analysis
摘  要：
The data of 835 Xuanhe pig were used to carry correlation and path analysis among 8 growth and development performance traits, body weight at 70 days(X_1), body weight at 4 months old(X_2), body length at 6 months old(X_3), body height at 6 months old(X_4), chest circumference at 6 months old(X_5) and body weight at 6 months old(Y). The optimized regression equation for estimating body weight at 6 months old was established by stepwise regression. The results showed that the growth traits of Xuanhe pig were improved to a higher level by 8 generations of selection.Different degree correlations were showed between these traits. Of which the correlation coefficient between body length at 6 months old and body height at 6 months old was reached to 0.8753,which was the highest. The second was that between body length at 6 months old and chest circumference at 6 month old(r=0.8708), and the smallest was that between the body weight at 70 days and body weight at 6 months old(r=0.2614). All the correlations were positive. The optimized equation for estimating body weight at 6 months old was Y= 3.1448-0.2583X_1+ 0.4296X_2+ 0.3767X_3+0.6026X_4-0.2275X_5.

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