Abstract:

Average week bodyweight of Huainan partridge duck from 0 week-old to 9 week-old were fitted with Gompertz model，Richards model and Logistic model. The results showed that Gompertz model was the best model and the index of fitness was0.99, the inflection age of growth was 5.29 weeks，and bodyweight at inflection age was 1071.81g, the largest weight gain per day. was 35.73g , the growth model: Y=2913.49×exp(-exp(1.23-0.23x)). The body weight was significantly positively (p＜0.01) related to the body slope length, heart girth, shank length. The regression equation was set up to estimate the body weight of Huinan partridge duck by the body slope length, heart girth, and shank length and the equation wasY=0.067Ｘ1＋0.046Ｘ2＋0.061Ｘ3－1.005.