浦东鸡生长曲线拟合和分析比较

发布时间：2018-04-27 21:49

本文选题：浦东鸡 + 生长曲线　；参考：《中国家禽》2017年09期

【摘要】：为了解浦东鸡的生长发育规律,研究利用Logistic、Gompertz和Bertalanffy三种生长曲线模型对浦东鸡公、母鸡0~20周龄的生长情况进行拟合与分析。结果:三种模型均能很好地拟合浦东鸡生长曲线,浦东鸡公、母鸡的R~2均在0.992以上,其中,Bertalanffy模型拟合效果最佳,公、母鸡的R~2分别为0.995和0.999。进一步分析三个模型的拟合值,公鸡的生长曲线拟合值与实测值相比较,Logistic模型0~3周龄明显大于实测值,4~8周龄低于实测值;Gompertz和Bertalanffy模型比Logistic模型生长曲线的拟合值更接近于实测值。母鸡的生长曲线拟合值与实测值相比较,Logistic模型0~3周龄明显大于实测值,Gompertz模型0~2周龄略大于实测值,Bertalanffy模型的拟合值与实测值最吻合。结果表明:Bertalanffy模型用于估计浦东鸡生长发育阶段体重最佳,Logistic模型最差。运用三种模型对浦东鸡进行生长曲线的拟合和分析有效,可预测浦东鸡的生长发育规律,为开展浦东鸡精准饲养和育种提供可靠依据。
[Abstract]:In order to understand the growth and development law of Pudong chickens, three growth curve models (Logistic-Gompertz and Bertalanffy) were used to fit and analyze the growth of male and female chickens at the age of 20 weeks. Results: all the three models could fit the growth curve of Pudong chicken well. The R2 of Pudong chicken and hen were all above 0.992, among them, Bertalanffy model had the best fitting effect, the RG-2 of male and hen were 0.995 and 0.999, respectively. After further analysis of the fitting values of the three models, compared with the measured values, the fitting value of the growth curve of the cock was significantly larger than that of the measured data at 0 and 8 weeks. The fitting values of the growth curve of the Bertalanffy model and the growth curve of the Logistic model were closer to the measured values than those of the Logistic model. The fitting value of growth curve of hen was significantly larger than that of Gompertz model at 3 weeks old than the measured value. The fitting value of Bertalanffy model was the best. The results showed that the best Logistic model for estimating the body weight of Pudong chickens during growth and development was the worst. Using three models to fit and analyze the growth curve of Pudong chicken can predict the growth and development law of Pudong chicken and provide reliable basis for precise breeding and breeding of Pudong chicken.
【作者单位】：上海市动物疫病预防控制中心;上海浦汇浦东鸡繁育有限公司;
【基金】：上海市科技兴农种业项目
【分类号】：S831

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