四川白鹅产蛋曲线数学模型探索

MATHEMATICAL MODELS FOR EGG PRODUCTION CURVE OF THE SICHUAN WHITE GOOSE

本文通过对四川白鹅产蛋性能的分析，提出２个四川白鹅产蛋曲线数学模型，经过检验，认为模型１更能准确地描述四川白鹅产蛋曲线。

In this paper the observed weekly egg production curve of the Sichuan White Goose1s analysized in detail.The curve raising period(0～20 week age)is commonly met bygrowth models. Such as Logist model and Gompertz model.Meanwhile,the curve periodafter peak(20～32 weeks of age)is fitted by models with growth models minusexponential model.Therfore,the two types of the egg production model are established. Values for the coefficient of determination(R￣2)is0.9762 and 0.9674 respectively;But,combining with the predictions of the observed egg production curve peak,themodel 1 seems to more accurately describe the observed egg production curve of theSichuan White Goose.