| 乳尿素氮估测奶牛尿氮排泄量的两个模型比较研究 |
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| 引用本文： | 翟少伟,杨严凯,成世明.乳尿素氮估测奶牛尿氮排泄量的两个模型比较研究[J].中国奶牛,2010(11):58-60. |
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| 作者姓名： | 翟少伟 杨严凯 成世明 |
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| 作者单位： | 集美大学水产学院,厦门361021 |
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| 基金项目： | 集美大学优秀青年骨干教师基金 |
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| 摘 要： | 比较了乳尿素氮估测奶牛尿氮排泄量的两个模型(模型1,UN=17.64×MUN;模型2,UN=10.068×MUN+47.29)的差异显著性,并利用24篇有关文献中泌乳奶牛乳尿素氮含量和尿氮排泄量的数据进行了残差图分析,评价了上述两个模型的准确性情况。结果表明,两个模型存在极显著差异(P0.01),且均不能准确估计奶牛的尿氮排泄量。
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| 关 键 词： | 泌乳奶牛 乳尿素氮 尿氮排泄量 |
Evaluation of Two Models to Estimate Urinary Nitrogen Excretion of Dairy Cows by Milk Urea Nitrogen Content |
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| ZHAI Shao-wei,YANG Yan-kai,CHENG Shi-ming.Evaluation of Two Models to Estimate Urinary Nitrogen Excretion of Dairy Cows by Milk Urea Nitrogen Content[J].China Dairy Cattle,2010(11):58-60. |
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| Authors: | ZHAI Shao-wei YANG Yan-kai CHENG Shi-ming |
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| Institution: | (Fishery College of Jimei University,Xiamen 361021) |
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| Abstract: | The differences between two models（Model 1,UN=17.64×MUN;Model 2,UN=10.068×MUN＋47.29）to estimate urinary nitrogen excretion by milk urea nitrogen were evaluated.Accuracy of two models was also evaluated by residual plot from the relevant data of 1675 lactating Holstein dairy cows in 24 references.The significant difference was found between two models（P0.01）,and the two models could not be used to predict the urinary nitrogen accurately. |
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| Keywords: | Dairy cows Milk urea nitrogen Urinary nitrogen excretion |
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