中国牛业科学2025，Vol.51Issue(3)：37-39,3.DOI:10.26951/j.cnki.ccs.2025.03.006
平凉红牛体重估测的约翰逊法系数校正研究
Study on Coefficient Correction of Johnson's Method for Body Weight Estimation in Pingliang Red Cattle
杨永栋 1张燕 1朱银霞 1魏文鹏 2李昊 1薛文勇 1罗干 1张强娟 1兰娜 2严鹏 2刘呈堂 1杨明桦1
作者信息
- 1. 华亭市畜牧兽医局,甘肃华亭 744100
- 2. 华亭市河西镇畜牧兽医站,甘肃华亭 744100
- 折叠
摘要
Abstract
To address the traditional Johnson method weight estimation error caused by the unique body structure of Pingliang Red cattle,this study aims to correct the estimation coefficients in the Johnson method for to provide a more accurate weight estimation method for Pingliang Red cattle breeding and live animal trading,scientific management,and other aspects.The weight,chest circumference,and body length of 100 Pingliang Red cattle(50 in the treatment group,50 in the validation group)were measured.The cor-rected coefficient of the Johnson formula was calculated using the back-calculation method,and t-tests were used to verify the differences between the estimated and actual values.The original coefficient in the formu-la is 10 080,resulting in a systematic overestimation of 29.51 kg(P＜0.01)in the estimated value.The cor-rected coefficient is 11 175,which can reduce the validation error to 1.77 kg(P＞0.05).The optimized esti-mation model significantly improved the accuracy of weight estimation for Pingliang Red cattle.关键词
平凉红牛/约翰逊法/体重估测/体尺性状/系数校正Key words
Pingliang Red cattle/Johnson's method/body weight estimation/body measurement traits/coefficient calibration分类
农业科技引用本文复制引用
杨永栋,张燕,朱银霞,魏文鹏,李昊,薛文勇,罗干,张强娟,兰娜,严鹏,刘呈堂,杨明桦..平凉红牛体重估测的约翰逊法系数校正研究[J].中国牛业科学,2025,51(3):37-39,3.
