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.