畜牧兽医学报2023，Vol.54Issue(12)：4952-4961,10.DOI:10.11843/j.issn.0366-6964.2023.12.007
文昌鸡母鸡生长模型的研究
Study on Growth Model of Wenchang Chickens
摘要
Abstract
The study aimed to study the weekly changes of body weight and body composition of Wenchang chickens,and establish the empirical growth model to provide scientific basis for effi-cient breeding of Wenchang chickens.A total of 300 healthy 1-day-old female chicks with similar body weight were randomly divided into 6 replicates and fed conventionally until 119 days of age.The body weight and body composition of Wenchang chickens were measured weekly.The re-sults showed that the body weight,carcass weight,feather weight,body protein weight and body fat weight of Wenchang chickens increased significantly with the increase of week age(P＜0.001).Four nonlinear function formulas,Gompertz,Von Bertalanffy,Logistic and Richards,were used to fit the growth curves of body weight,body protein and body fat of Wenchang chicken,respectively.According to the determination coefficient(R2),mean square error,Akaike information criterion and residual sum of squares of regression models,it is found that Gompertz model has the highest degree of fit.The growth models of body weight,carcass,feather,body protein and body fat of Wenchang chickens were established using Gompertz model.Except for the feather moisture weight,the R2 of the other component models was close to or exceeded 0.99.The mature weight of body weight,body protein and body fat were 2 382 g,696.8 g and 1 037.1 g,respectively.The relative maturity rates were 0.023 2,0.017 4 and 0.017 8,respectively.The Gompertz model can be used to predict the body weight and body composition weight of Wenchang chickens at different days of age.These models and their calculus formulas are helpful for genetic selection and production decision-making of Wenchang chickens,and also provide a basis for predicting the daily energy and amino acid requirements of Wenchang chickens in the future.关键词
文昌鸡/生长阶段/Gompertz模型/预测模型Key words
Wenchang chicken/growth stage/Gompertz model/prediction model分类
农业科技引用本文复制引用
徐小静,董瑞玲,魏立民,赵少猛,赵桂苹,张敏红,冯京海..文昌鸡母鸡生长模型的研究[J].畜牧兽医学报,2023,54(12):4952-4961,10.基金项目
文昌鸡优势特色产业集群项目(WCSCICP20211106) （WCSCICP20211106）
国家现代农业肉鸡产业技术体系专项(CARS-41-Z12) （CARS-41-Z12）
中国农业科学院科技创新工程(ASTIP-IAS07) （ASTIP-IAS07）
