中国草食动物科学2025，Vol.45Issue(6)：89-94,6.DOI:10.3969/j.issn.2095-3887.2025.00.004
多胎肉羊早期生长规律及生长曲线拟合分析
Study on the Early Growth Patterns and Fitting Curve of Prolific Mutton Sheep
摘要
Abstract
In order to study the growth and development patterns of prolific Suffolk sheep,232 lambs aged 0-6 months were selected as the research objects.The body weights of the lambs were measured monthly on time.Three models,Logistic,Gompertz and Bertalanffy,were used to conduct fitting analysis on the growth patterns of the lambs,aiming to study the optimal growth fitting curve models suitable for male and female lambs.The results showed that the body weight of single lamb in the early growth stage was greater than that of twin and triplet lamb.The body weight of male and female lambs were directly proportional to the increase in months of age,and the body weight of male lambs were higher than those of females.The growth rate of lambs was the fastest from 0 to 3 months of age,began to slow down after 3 months of age,and was the slowest from 5 to 6 months of age.The Bertalanffy model exhibited the highest fitness for both male and female lambs,with values of 0.997 and 0.998 respectively,which was better than the fithess of the Logistic model(0.987 for males and 0.988 for females)and the Gompertz model(0.995 for males and 0.996 for females).The inflection points of the body weight of male lambs were at 1.078 months of age and 16.092 kg,while those of female lambs were at 1.118 months of age and 13.647 kg.The formula for fitting male lambs using the Bertalanffy model was Y=54.311×(1-0.531e-0.431t)3,and the formula for fitting female lambs was Y=46.061×(1-0.572e-0.483t)3.The results indicated that the body weight of prolific Suffolk lambs grew the fastest from 0 to 3 months of age,and the Bertalanffy model was the best for fitting the early growth and develop-ment.关键词
多胎肉羊/多胎萨福克羊/生长规律/拟合分析Key words
prolific mutton sheep/prolific Suffolk sheep/growth patterns/fitting analysis分类
畜牧业引用本文复制引用
孙国智,杨红卫,李国保,赵轩,司建军,李岩,杨华..多胎肉羊早期生长规律及生长曲线拟合分析[J].中国草食动物科学,2025,45(6):89-94,6.基金项目
兵团农业GG项目 （）
新疆维吾尔自治区"天山英才"培养计划(2022TSYCCX0122) （2022TSYCCX0122）
兵团农业科技创新工程专项(NCG202211) （NCG202211）
新疆维吾尔自治区肉毛兼用绒毛用羊品种选育提升计划(2024XJRMY-03) （2024XJRMY-03）
