中文摘要：

为探究临床普检中乳样代替血样检测的可行性,调查了奶牛乳清与血清中尿素氮（BUN）、肌酐（Crea）、尿酸（UA）水平及其相关性。试验采集南宁市某奶牛场奶牛血样和乳样,使用全自动生化分析仪测定这3个指标,结果该牛场Crea值普遍低于正常范围,其余指标均在正常范围内,相关性分析发现,血浆和乳清中BUN水平高度相关（R=0.854,P〈0.01,n=50）、Crea水平低度相关（R=0.411,P〈0.01,n=50）,UA指标无显著相关性。箱线图和散点图分析分别发现血浆和乳清中BUN含量相近且呈线性关系。表明在临床普检中乳清替代血浆样本检测BUN是可行的,对奶牛产后肾功能和饲料蛋白质营养供应监控具有重要意义。今后应进一步扩大样本量进行临床验证。

英文摘要：

To investigate the feasibility of whey instead of blood in clinic general survey, the relationship between whey and serum urea nitrogen （BUN）, and creatinine （Crea） and uric acid （UA） were investigated. The blood and milk samples were collected from a dairy farm in nanning, and automatic biochemical analyzer was used to detect three parameters. The results showed that Crea values were generally lower compared with the normal value, and the other parameters were normal. Correlation analysis showed that between plasma and whey, the BUN had high correlation （r = 0. 854, P 〈 0.01, n = 50）, and Crea had low correlation （ r = 0. 411, P 〈 0. 01, n = 50）. UA had no significant correlation. The box plots and the scatter plots analysis revealed that the urea nitrogen levels between plasma and whey were similar and linear. These findings show that the whey BUN can be used in Clinical examination, and it is important for cows postpartum renal function and monitoring the dietary protein supply.