朗德鹅早期生长发育模型研究

Study on the Growth Mode of the Early Growth Stage of Landes Goose

选用朗德鹅160只,测定8周龄前的体重、胫长、体斜长,并对各指标用Logistic模型、Bertalanffy模型、Gompertz模型进行生长曲线拟合。结果表明,3种模型都能很好地拟合朗德鹅各指标的生长曲线(R2均超过0.99),但综合分析表明Gompertz曲线对体重拟合最为合适(R2=0.9998);对胫长(Logistic模型:R2=0.9984)、体斜长(Logistic模型:R2=0.9978)指标,Logistic曲线拟合效果要优于Bertalanffy模型和Gompertz模型。

Choose 160 Landes geese and measure their body weight, shank length, body slope length until 8 weeks. Then fit these indexes with three non-lineared growth models： Logistic model, Bertalanffy model and Gompertz model. The results show that the growth process of Landes geese could be demonstrated very well by three models, and all indexes of fitness were very high （R^2 more than 0. 99）. But Gompertz model was considered to be the best model to fit body weight curves of Landes geese （R^2 =0. 9998）; Logistic model was the best model to fit shank length （R^2 =0. 9984） and body slope length （R^2=0. 9978）.