淮南麻鸭生长发育规律及生长曲线拟合研究

采用Gompertz、Richards和Logistic模型进行生长曲线拟合,对0~9周龄淮南麻鸭的体质量增长规律进行了研究。结果表明:淮南麻鸭体质量增长以4周龄时最大,日增体质量为41.26 g;3种模型拟合效果俱佳,其中Gompertz模型拟合效果最好,拟合度为0.994 9,对淮南麻鸭前期生长的拟合结果更接近观测值;得到Gompertz模型方程为:y=2 913.49×exp(-exp(1.23-0.23x)),生长拐点5.29周龄,拐点体质量1 071.81 g。

Study on Growth and Development and Fitting of Growth Curve of Huainan Partridge Duck

To study the law of body growth of 0-9-week-old Huainan partridge duck,the nonli-near curves of Gompertz model,Logistic model,Richards model were used to fit the growth mo-del.The results showed that the growth of liver reached the pinnacle at 4 weeks old and the largest weight gain per day was 41.26g.The growth curves were appropriately fitted with all three models,but the Gompertz model had the best effect on fitting with the growth curve,and the value of R2 was 0.9499.The fitting result of Gompertz was more similar with practical production.The Gompertz model equation was y=2913.49×exp(-exp(1.23-0.23x)).The inflection point age was 5.29 week and the inflection point body weight was 1071.81g.