摘要
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.
出处
《广东畜牧兽医科技》
1995年第1期14-15,共2页
Guangdong Journal of Animal and Veterinary Science