德昌肉兔体尺、耳型与体重性状的相关通径分析

The Parameter Syntax to the Body Size and Ear Shape and Weight Traits of Rabbits in Dechang County

经在四川安宁河流域的德昌县对肉兔产业化基地的实地抽样调查,对所获不同品种和年龄组的相关通径分析、应证了相关研究半岁兔的体长、胸围、耳长、耳宽和体重关系密切,随生长年龄和发育时间增长,其相关性状关系密切程度明显下降,半岁组直接决定系数dyx1=0.3696,dyx2=0.3934,dyx3=0.3769,dyx4=0.4837,多元决定系数达到Σd=0.8897,并建立"最优"回归方程对一线生产使用是有意义的。

According to the survey of the rabbit industrialization base in Dechang county,based on parameter syntax to the rabbit of different species and ages,the paper proved that there are close relationship among body size,chest circumference,ear width and weight.with time goes by,there is a decline in closeness,the direct determination coefficients of half-age group are：dyx1=0.3696,dyx2=0.3934,dyx3=0.3769,dyx4=80.437.the multiple determination coefficients are Σ d=0.8897.To build＂the best＂regression equation is meaningful to front-line production.