Study on Growth Law of Guixiang Chicken

LI Li; XU Shengwei; LIANG Mingzhen

doi:10.3969/j.issn.1006-267x.2014.07.010

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 7: 1787 - 1795

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.07.010

Poultry Nutrition

Study on Growth Law of Guixiang Chicken

LI Li ,
XU Shengwei ,
LIANG Mingzhen

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College of Animal Science and Technology, Guangxi University, Nanning 530004, China

Received date: 2014-01-30

Online published: 2014-07-01

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Abstract

In order to research the growth law of Guixiang chicken, eight hundred and ten 1-day-old hens of Guixiang chicken were randomly selected. According to relevant data reports and production practice experience, they were divided into three stages-fledging stage (1 to 4 weeks of age), growing stage (5 to 13 weeks of age) and fattening stage (14 to 17 weeks of age) for feeding. The body weight of Guixiang chicken from 1 to 17 weeks of age was measured. Three models (Logistic, Gompertz and Bertalanffy models) were used to fit the growth curve of Guixiang chicken, and the fitting results were analyzed and compared. The results showed that the best fitting for weight change during all growth period of Guixiang chicken was Bertalanffy model and there should make each week body weight forecasted by Bertalanffy model as guidance in production. But to forecast each stage important growth inflection point, the Logistic model was more accurate. The inflection point weeks of age of Guixiang chicken at three stages which forecasted by Logistic model were 3.98, 9.30 and 12.17 weeks of age, respectively. Therefore, it should be divided into four stages in production and provide the corresponding nutrient levels of diets in different growth stages in order to satisfy its growth and development and to ensure the best economic benefits.

Key words： Guixiang chicken; growth law; fitting curve; Logistic model; Gompertz model; Bertalanffy model

Cite this article

LI Li , XU Shengwei , LIANG Mingzhen . Study on Growth Law of Guixiang Chicken[J]. Chinese Journal of Animal Nutrition, 2014 , 26(7) : 1787 -1795 . DOI: 10.3969/j.issn.1006-267x.2014.07.010

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