蜀宣花牛体重和体尺生长曲线拟合研究

Growth curve fitting of body weight and body measurements inShuxuan cattle

中文关键词: 蜀宣花牛  生长曲线  体重  体高  体斜长  胸围

英文关键词: Shuxuan cattle  growth curve  body weight  body height  body length  chest circumference

中文摘要:

      为了探讨蜀宣花牛的生长发育规律，选择491头6～20月龄蜀宣花牛公牛，每月测定体重、体高、体斜长和胸围，然后采用Logistic、Gompertz和Von Bertalanffy 3种非线性模型，对其体重和体尺的发育特征进行拟合分析,建立各指标拟合方程，最后对方程拟合曲线与实测值进行了对比分析。结果表明Logistic模型最适合用于拟合蜀宣花牛的体重变化，Von Bertalanffy模型最适合用于拟合蜀宣花牛的体高、体斜长和胸围变化。

英文摘要:

      The research was performed on Shuxuan cattle to understand their growth and development patterns,491 male Sichuan Xuanhua cattle aged 6-20 months were selected.Their weight,height,body length,and chest circumference were measured monthly.Logistic,Gompertz and Von Bertalanffy models were used to fit and analyze the developmental characteristics of their the growth curves for weight and body size,and fitting equations for each indicator were established.Finally,the fitting curves of the equations were compared and analyzed with the measured values.The results showed that the Logistic model was the most suitable for fitting the changes in body weight,body length and chest circumference of Shuxuan cattle.