蕨麻小型猪主要脏器重量与体重的相关性分析

目的测定蕨麻小型猪体重和主要脏器重量,计算脏器系数,并对脏器重量与体重进行相关分析和回归分析。方法选取7~15月龄普通级蕨麻小型猪21头(其中雌性12头,雄性9头),分别测定体重和心脏、肝脏、脾脏、肺脏、肾脏、脑、膀胱和胃等8个主要脏器重量,计算脏器系数,再用Student's t test分析性别间差异,用SAS软件进行各脏器重和体重间的相关、线性回归、多元线性回归和多重回归分析。结果性别间比较,蕨麻小型猪体重、脏器重量和脏器系数差异无显著性。相关分析显示主要脏器的重量与体重相关性显示出了一致的变化规律,均与体重呈正相关,其中心脏、肝脏、脾脏、肾脏的重量与体重显著正相关(P0.05),线性回归分析表明线性方程具有实际意义。多元线性回归分析显示心脏和胃重量与体重有显著直接相关性,其中心脏重与体重相关性最强。进一步多重回归分析说明,肝脏、肺脏、肾脏、膀胱分别与心脏和胃表现显著回归,而脾脏与肝脏表现显著回归。结论蕨麻小型猪的主要脏器系数性别间差异无显著性,主要脏器与体重存在一定的线性关系。

The Correlation Research of Organ Weight and Body Weight in Juema Minipigs

Objective To measure the major organ weights and body weight in Juema minipigs, calculate the organ coefficient, and analyze the correlation between body weight and major organ weights. Methods The body weight and weight of 8 organs in 21 common 7-15-month old Juema minipigs (12 females and 9 males) were measured. The organ coefficients were calculated, and sex difference was analyzed by Student's t test. Linear regression, multivariable linear regression and multiple regression analysis were carried out to analyze the correlation between body weight and major organ weights using SAS software. Results There were no significant differences between males and females in body weight, organ weights and organ coefficients. Major organ weights were positively correlated to body weight determined by correlation analysis, and the weights of heart, liver, spleen, and kidney had significant positive correlation to body weight (P<0.05), and significant linear equations were established by linear regression analysis. The weights of heart and stomach showed significant direct correlation to body weight according to the multivariable linear regression analysis, and the most close correlation was found between the heart weight and body weight. Moreover, multiple regression analysis showed that the liver, lung, kidney and bladder had significant positive correlation with heart and stomach, and spleen had significant positive correlation with liver. Conclusion There are no significant differences between major organ coefficients in male and female Juema minipigs. There exists some linear relationship between main organ weights and body weight.