江西农业大学学报2026，Vol.48Issue(1)：176-185,10.DOI:10.3724/aauj.2026016
安义瓦灰鸡生长曲线拟合及分析
Fitting and analysis of growth curve of Anyi gray chicken
摘要
Abstract
[Objective]This study aims to fit the growth curve of Anyi gray chickens using nonlinear models to investigate their growth patterns and provide a theoretical basis for production.[Method]A total of 100 fertilized eggs were collected from the Anyi Gray Chicken breeding farm,and 91 chicks were hatched.The chickens were reared in mixed-sex multilayer cages from 0 to 6 weeks and in free-range groups under woodland from 7 to 18 weeks.Body weights were measured at 0,2,4,6,8,10,12,14,16,and 18 weeks of age.Three nonlinear models Logistic,Von Bertalanffy,and Gompertz were applied to fit the growth curves of male and female Anyi gray chickens.[Result]All three models achieved R² values above 0.99.The Von Bertalanffy model showed the best fit for males,while the Gompertz model was optimal for females,both with R² values of 0.998.The inflection point of the body weights for male and female chickens were 782.89 g and 469.39 g,respectively,and the inflection point of ages were 9.21 weeks and 7.51 weeks,respectively.The weight of cocks in this breed was significantly(P<0.05)higher than that of hens in each week.Males reached their peak growth rate at week 10,whereas females reached it at week 8.[Conclusion]The Von Bertalanffy model is identified as the most suitable for male Anyi gray chickens,with the equation:W=2 642.25×(1-0.807e-0.096t)3.The Gompertz model is optimal for females,with the equation:W=1 275.95e-3.747×exp(-0.176t).关键词
生长发育/生长曲线/非线性模型/安义瓦灰鸡Key words
growth and development/growth curve/nonlinear models/Anyi gray chicken分类
农业科技引用本文复制引用
李文伟,刘彦婷,周亚南,廖祖蓉,丁振玄,毛辉荣,陈彪,刘三凤..安义瓦灰鸡生长曲线拟合及分析[J].江西农业大学学报,2026,48(1):176-185,10.基金项目
国家重点研发计划项目(2021YFD1200803)、农业生物育种国家科技重大专项(2023ZD0405302)和江西省现代农业家禽产业技术体系资助项目(JXARS-09) Project supported by the National Key Research and Development Program of China(2021YFD1200803),Biologi-cal Breeding-National Science and Technology Major Project(2023ZD0405302)and Technology System of Mod-ern Agricultural Poultry Industry of Jiangxi Province(JXARS-09) （2021YFD1200803）
