摘要
为评价不同预测方法在牦牛活体体重预测中的精度及推广价值,本研究基于地磅法实测数据,对估算法和激光法所产生的预测数据进行分析检验。利用单个和多个体尺指标,共筛选出14个R2较高的体重预测公式。通过对这3种体重测定方法的比较和精度检验,得出估算牦牛体重最优公式为:体重=体斜长×0.009+胸围×0.011+2.34。然而,激光法在预测牦牛体重方面操作最简捷、精度较高,适用性最好。综上,本研究中所建立的预测模型均可在牦牛养殖中进行推广应用。
This study was to evaluate the accuracy and promotion value of different prediction methods for live weight of yak.According to the actual data of the weighbridge method,the estimation method and the laser method were compared,and the prediction data were analyzed and tested.14 single and multiple body size index weight prediction equations with high R~2 were screened.The three weight measurement methods were compared and their accuracy was tested.And the optimal equation for estimating the weight of the yaks was obtained as:weight=oblique body length×0.009+chest circumference×0.011+2.34.Because of its simple operation and high accuracy,the laser method exhibited the best applicability in predicting the weight of yaks.The model established in this study might be popularized and applied in raising yaks.
作者
王跃忠
赵云
周毛加
柴晖丽
王廷艳
拜彬强
郝力壮
WANG Yuezhong;ZHAO Yun;ZHOU Maojia;CHAI Huili;WANG Tingyan;BAI Binqiang;HAO Lizhuang(Huangnan Tibetan Autonomous Prefecture Animal Disease Prevention and Control Center,Tongren 811300,China;Qinghai Province Forage Technology Extension Station,Xining 810008,China;College of Agriculture and Animal Husbandry,Qinghai University,Xining 810016,China;Academy of Animal Husbandry and Veterinary Sciences,Qinghai University/Qinghai Province Key Laboratory of Nutrition and Feed Science of Plateau Grazing Livestock Animals,Xining 810016,China)
出处
《畜牧与兽医》
CAS
北大核心
2022年第12期36-40,共5页
Animal Husbandry & Veterinary Medicine
基金
青海省科技厅重点研发与转化计划-科技成果转化专项(2019-SF-156)。
关键词
牦牛
体重
预测方程
精度分析
应用
yak
body weight
prediction equation
precision analysis
application