关键词: 生长曲线, 藏鸡, 体重, 模型

Abstract: The growth curve of Tibetan chicken from 0 to 16 weeks old was analyzed and fitted with three kinds of nonlinear models (Gompertz, Logistic, von Bertalanffy).The result showed that the growth curves could be well fitted with three models, but the Gompertz model had the best effect on fitting with the growth curves. Analyzing the fitting parameters of the Gompertz, we found the adult body weight of cock is higher than the hen notably, but the growth inflexion of cock (13.20 weeks) is late to the hen (11.27 weeks).

Key words: growth curve, Tibetan chicken, body weight, model