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.
Chinese Journal of Veterinary Medicine