飞鸭早期生长曲线的拟合与分析

The Early Growth Curve Fitting and Analysis on Fei Duck

采用10种函数模型对不同性别0-63日龄飞鸭的生长曲线进行了拟合与分析。结果表明,不论性别,不同的拟合曲线均表现出一致的拟合优劣程度。拟合度达到0.99以上、显著性水平小于0.001的模型有线性模型、二次多项式和三次多项式模型,其中以三次多项式模型的拟合度最高（R2=0.997）。

A total of ten kinds of mathematical model were used to fit the early growth curves of 0 to 63-day-old Fei duck.The results showed that the fitting curves had same degree of fit merits in the male ducks and the female ducks.The models with goodness of fit were above 0.99 and the levels of significance less than 0.001 were the Linear model,Quadratic polynomial model and Cubic polynomial model.Among all the ten models,the goodness of fit of cubic polynomial model was the highest（R2=0.997）.