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Mathematic modeling on growth of Dehua black chicken

Zhu ZhiMing

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Abstract

The growth curve of Dehua black chicken from 0 to 18 weeks was fitted with three nonlinear models.The correlation coefficients(R~2) of the chicken's growth data with the Gompertz,Logistic and von Bertalanffy models were 0.9998,0.9987,and 0.9996,respectively.Using the Gompertz model,which had the highest R~2,the maximum applicable adult body weight was found to be 1754.7g,the critical body weight,815.22g,and the critical age of the chicken,8.819 weeks.

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What this paper is about

The growth curve of Dehua black chicken from 0 to 18 weeks was fitted with three nonlinear models.The correlation coefficients(R~2) of the chicken's growth data with the Gompertz,Logistic and von Bertalanffy models were 0.9998,0.9987,and 0.9996,respectively.Using the Gompertz model,which had the highest R~2,the maximum applicable adult body weight was found to be 1754.7g,the critical body weight,815.22g,and the critical age of the chicken,8.819 weeks.

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Available abstract

The growth curve of Dehua black chicken from 0 to 18 weeks was fitted with three nonlinear models.The correlation coefficients(R~2) of the chicken's growth data with the Gompertz,Logistic and von Bertalanffy models were 0.9998,0.9987,and 0.9996,respectively.Using the Gompertz model,which had the highest R~2,the maximum applicable adult body weight was found to be 1754.7g,the critical body weight,815.22g,and the critical age of the chicken,8.819 weeks.

Key concepts: Gompertz function, Body weight, Growth curve (statistics), Growth model, Nonlinear model, Animal science, Logistic regression, Mathematics

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