不同杂交组合鹅早期体重生长曲线拟合度的研究

Study on Growth Curve Fitting of Early Body Weight in Different Crossbreed Geese

试验采用Logistic、Von Bertallanffy和Gompertz 3种非线性生长模型对0～10周龄不同杂交组合即卡籽籽鹅（KZZ）、卡籽卡籽鹅（KZKZ）、卡卡籽鹅（KKZ）的早期体重生长发育规律进行生长曲线拟合与分析。结果表明：3种模型均能较好地拟合不同杂交组合鹅早期体重发育过程，拟合度均在0．99以上，其中以Logistic模型拟合度最高，为最佳模型；用Logistic模型估计不同杂交组合鹅体重的最大值，发现KKZ杂交组合鹅生长速度均快于KZKZ和KZZ杂交组合鹅．且与生产实践符合度最高。

Three different crossbreed geese （KZZ, KZKZ, and KKZ）, with age of 0-10 weeks, were fitted and comparatively analysed in terms of growth and development rules in early body weight by adopting three kinds of nonlinear model of Logistic, Bertallanffy and Gompertz. The results showed that the three models could well fit the process of growth in early body weight and fitness of the three models were all above 0.99, among which the Logistic was optimal model based on the highest fitness. And the growth rate of KKZ geese was faster than that of KZKZ and KZZ, which was found by estimating the maximum data of the body weight with the Logistic model and was consistent with production practice.