修水黄羽乌鸡生长发育规律及生长曲线拟合研究

A Study on the Law of Growth and Development and Growth Curve Fitting of Xiushui Yellow Silky

对修水黄羽乌鸡这一新兴的地方特禽资源平毛、翻毛系生长发育规律加以探讨。运用Logistic、Von Berta-lanffy、Gompertz 3种非线性动物生长模型对0～22周龄修水黄羽乌鸡进行生长发育曲线拟合分析，并通过拟合度（ R2）和残差平方和（ E）进行效果比较。结果显示3种模型模拟效果均较好，但Von Bertalanffy方程拟合效果最佳，平、翻毛两系母鸡拟合度分别为0．990、0．991，平毛系拐点时间为11．02周略早于翻毛系的11．08周，平毛系拐点体质量（503．21 g）也比翻毛系（474．02 g）大。运用3种模型对修水黄羽乌鸡进行生长曲线拟合分析是可行的，为及时了解修水黄羽乌鸡生长发育及改善饲养管理提供参考。

The law of growth and development of lines of normal feather and frizzled feather in Xiushui Yellow Silky,which is a newly emerging local special poultry resource,was investigated.Three nonlinear animal growth models of Logistic,Von Bertalanffy and Gompertz were applied to the fitting analysis of the growth curve of Xiushui Yellow Silky in 0-22 weeks,and the effect was compared by the goodness of fit （R2） and the resid-ual sum of squares （ E） .The simulation effects of all the three models were good,but the fitting effect of the Von Bertalanffy equation was the best,the degrees of the fitting goodness of fit of two lines of normal feather and frizzled feather were 0.990 and 0.991 respectively.The inflection point time of normal feather was at the 11.02nd week which was earlier than that of the frizzled feather,which was at the 11.08th week,while the inflec-tion point weight （503.21 g） of the former was larger than that of the latter （474.02 g） too.It is feasible to use the three models to the fitting analysis of the growth curve of Xiushui Yellow Silky,which provides a reference for understanding its growth and development in time and improving its feeding and management.