樱桃谷种鸭的产蛋率与月龄的回归分析

Regression Analysis of laying Rate and Age in cherry Valley Duch Breeds

２４０９只（公３３０只、母２０７９只）樱桃谷种鸭，经过１０个月的试验。统计了母鸭的月产蛋数和产蛋率，分析了产蛋率（Ｙ）与月龄（Ｘ）之间的回归关系，得到下述回归方程：ｙ＝０．５７ｘ￣３－１７．４１ｘ￣２＋１６９．９０ｘ－４６８．８９。在生产上，可根据此回归方程推算出樱桃谷种鸭各时期的产蛋率。

breeding ducks(330 drakes and 2079 ducks)in cherry Velley duck Breeds were experi-mented for ten months. We counted monthly egg production and laying rate in ducks,and analyged the Vegression between laying rate(y)and age(x). The Vegression eguation is obtaineed as follows:y =0.57x￣3-17. 41x￣2+169. 90x-468.89 in duck production, We can use the egution to caiculate laying rate ir1 any time so as to plan duck production rationally and improve economic benefit of breeding ducks.