北京鸭、樱桃谷鸭与仙湖鸭的生长曲线分析

Analyses of Growth Curves in Beijing Ducks,Cherry Valley Ducks and Xianhu Ducks

本文利用曲线方程分别拟合了北京鸭、樱桃谷鸭和仙湖鸭从0～7周龄的每周平均体重 ,作出了相应的曲线图 ,并进行生长曲线分析。结果表明 :2周龄前的仔鸭生长曲线符合指数函数方程 ,而2周龄后则几乎呈直线关系 ,符合直线回归方程 ,且两个方程的拟合优度R2 均达0 986以上。

Ducklings of Beijing Ducks,Cherry Valley Ducks and Xianhu Ducks aged 0～7 weeks were fitted in terms of average body weight per week by means of curve equation,and relevant curves were made and analysed.The result is shown as following the growth of those under the age of 2 weeks appears in accordance with exponential function equation,while those above the age of 2 weeks appears rectilinear,meaning accordance with linear regression equation.Both the equations have their goodness of fit of above 0.986.