摘要
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<P<0.05);仙湖肉鸭母鸭的体重、体斜长对皮脂率影响较大,相关系数分别达到0.6495和0.5127,属于中等偏强的相关,且相关关系极显著(P<0.01);对公鸭皮脂率正直接影响最大的是胸宽,通径系数达0.5501,独立效应为30.261%,互作效应最大的是胸宽与胫围,为-13.585%;对母鸭皮脂率正直接影响最大的是体重,通径系数为0.3898,独立效应达15.194%,互作效应最大的是体重和体斜长,为11.037%。估测公母鸭皮脂率最优回归方程分别为:■=-12.282+0.307x2+1.616x4+1.537x6和■=2.604+2.806x1+0.541x2。
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 A was as follows：y=-12.282＋0.307x2＋l.616x4＋l.537x6 and y=2.604＋2.806x,＋0.541 x2.
出处
《中国家禽》
北大核心
2012年第10期27-30,共4页
China Poultry
基金
广东省科技攻关项目(2008B020600004)
关键词
通径分析
体重
体尺指标
皮脂率
仙湖肉鸭
path coefficient analysis
body weight
body length
subcutaneous fat rate
Xianhu meat ducks
