Method for predicting subclinical ketosis of dairy cow by using urobilatogen, urine pH and blood UREA

The invention provides a method for predicting cow subclinical ketosis by using urobiliary, urine pH and blood UREA, and the urobiliary, urine pH and blood UREA are sensitive to cow subclinical ketosis and can be used for early warning. The subclinical ketosis of the dairy cow is predicted by detecting the urobilatogen, the urine pH and the blood UREA content, and it is clear that the urobilatogen, the urine pH and the blood UREA content are all remarkably related to the subclinical ketosis. Determining the current urine biliary original gt; the concentration is 49.50 mu mol/L, and the urine pH is 1t; 7.63 or a blood UREAgt; when the concentration is 4.78 mmol/L, it can be predicted that the dairy cow suffers from the subclinical When urine and bile are gt; when the concentration is 49.50 [mu] mol/L, the sensitivity for predicting that the dairy cow suffers from the subclinical ketosis is 66.70%, and the specificity is 100%; when the urine pH is 1t; 7.63, the sensitivity of predicting the dairy cow to suffer