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Lethal Alleles02:41

Lethal Alleles

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Updated: May 12, 2026

In Ovo Feeding of Commercial Broiler Eggs: An Accurate and Reproducible Method to Affect Muscle Development and Growth
06:38

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Published on: September 20, 2021

The dynamics of body composition in yellow-feathered broilers.

Sai Zhang1, Long Li1, Jinling Ye1

  • 1Institute of Animal Science, Guangdong Academy of Agricultural Sciences, State Key Laboratory of Swine and Poultry Breeding Industry, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, Guangdong, China.

Animal Nutrition (Zhongguo Xu Mu Shou Yi Xue Hui)
|May 11, 2026
PubMed
Summary

This study effectively modeled chicken growth using the Gompertz model, providing equations for body protein and fat mass. These models can help predict daily nutrient and energy needs for Qingyuan Partridge chickens.

Keywords:
Allometric modelBody componentBody protein depositionGompertz modelQingyuan Partridge chicken

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Area of Science:

  • Animal Science
  • Quantitative Biology
  • Poultry Nutrition

Background:

  • Accurate modeling of growth is crucial for optimizing poultry production and managing nutritional requirements.
  • The Gompertz model is a well-established mathematical tool for describing biological growth patterns.

Purpose of the Study:

  • To fit the Gompertz growth curve for body weight, components, and composition in Qingyuan Partridge chickens.
  • To predict body energy content based on body protein and fat levels using multiple linear regression.
  • To identify key predictors of body protein and fat using an allometric growth model.

Main Methods:

  • Fitted Gompertz growth curves to body weight, muscle, and fat data collected over 120 days from 840 chickens.
  • Employed multiple linear regression to estimate body energy from protein and fat content.
  • Utilized allometric functions to analyze the relationship between component growth rates and overall body weight.

Main Results:

  • Developed specific Gompertz equations for body protein and fat mass in both male and female Qingyuan Partridge chickens.
  • Found that male breast muscle and female thigh muscle growth showed the highest proportionality to body protein deposition.
  • Demonstrated the efficacy of the Gompertz model in representing changes in body weight, components, and composition.

Conclusions:

  • The Gompertz model provides an efficient method for describing the growth dynamics of body weight, components, and composition in chickens.
  • The derived Gompertz equations for body protein and fat can be instrumental in calculating daily nutrient and energy requirements.
  • This study offers valuable insights for precision feeding strategies in poultry.