Abstract:In order to study the early growth and development of Taiping chickens and improve the effect of breed selection, this study used Logistic, Von Bertalanffy, and Gompertz three nonlinear growth models to fit the body weight, and correlated 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 0 to 15 weeks old. The inflection point ages of Taiping cocks and hens obtained 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 1 555.34 g and 1 312.09 g, respectively. There were varying degrees of correlations between the body weight and body size of 13-week-old Taiping chickens, and the body weight of roosters was significantly positively correlated 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).
