康县太平鸡早期生长曲线拟合及体重与体尺相关性分析

Fitting of Early Growth Curve and Correlation Analysis between Body Weight and Body Size of Taiping Chicken in Kang County

为研究太平鸡早期生长发育规律,提高品种选育效果,采用Logistic、Von Bertalanffy、Gompertz三种非线性生长模型对其体重进行拟合,并对13周龄的体重与体尺进行相关性分析。结果表明:Gompertz模型对太平鸡0~15周龄体重的拟合效果最佳,拟合所得的太平公、母鸡的拐点周龄分别为7.08周、6.84周,拐点体重分别为572.24 g、482.74 g,成熟体重分别为1555.34 g、1312.09 g;13周龄太平鸡体重与体尺之间存在不同程度的相关性,公鸡的体重与体斜长、龙骨长、胫长、胫围、骨盆宽呈极显著正相关(P<0.01);母鸡的体重与龙骨长、胫长、胫围、胸围、骨盆宽呈极显著正相关(P<0.01)。

In order to study the early growth and development of Taiping chickens and improve the effect of breed selec-tion,this study used Logistic,Von Bertalanffy,and Gompertz three nonlinear growth models to fit the body weight,and cor-related the body weight and body size at 13 weeks of age analyze.The results show that the Gompertz model has the best fitting effect on the body weight of Taiping chickens from O to 15 weeks old.The inflection point ages of Taiping cocks and hens ob-tained by fitting are 7.08 weeks and 6.84 weeks respectively,and the inflection point weights are 572.24 g and 482.74 g,and the mature body weights were 1555.34 g and 1312.09 g,respectively.There were varying degrees of correlations between the body weight and body size of 13-weekold Taiping chickens,and the body weight of roosters was significantly positively cor-related with body oblique length,keel length,shin length,shin girth,and pelvic width(P<0.01).The body weight of hens was significantly positively correlated with keel length,shin length,shin girth,chest girth,and pelvic width(P<0.01).