仙湖肉鸭A系皮脂率与体重、体尺的相关及通径分析

本研究对仙湖肉鸭(A系)7周龄的皮脂率、体重、体尺指标等8个性状进行了相关分析和通径分析。结果表明:仙湖肉鸭公鸭的体斜长、胸宽、胫长与皮脂率均呈中等正相关,且相关关系显著(0.01

Correlation and Path Coefficient Analysis between Body Weight, Body Size and Subcutaneous Fat Rate in Strain A of Xianhu Meat Ducks

The correlation and path coefficient between body weight or body size and subcutaneous fat rate in 7 weeks age of strain A of Xianhu meat ducks were analyzed. The results indicated that there were moderate correlated between body length,chest breadth,tibial length and subcutaneous fat rate,and the correlation was significant(P<0.05). The subcutaneous fat rate were affected by body weight and body length in the female Xianhu ducks,and the correlation coefficient were 0.6495 and 0.5127 respectively,which were moderate correlated,and the correlation were extremely significant (P<0.01). As for the male duck’s subcutaneous fat rate,the distinctive effect was from chest breadth,the path coefficient was 0.5501,and the independent effect was 30.261%. The interaction effect between chest breadth and tibial circumference was maximum,which was -13.585%. The subcutaneous fat rate in female ducks were directly affected by body weight,and the path coefficient was 0.3898,and the independent effect was 15.194%. The interaction effect between body weight and body length was maximum,which was 11.037. The optimal predicting equation of regression was as follows:■=-12.282+0.307x2+1.616x4+1.537x6 and ■=2.604+2.806x1+0.541x2.