EARLY DIAGNOSIS OF PREGNANCY IN COWS BY DETERMINING PAG CONTENT IN BLOOD SERUM COW ELISA METHOD

The authors of the article used the ELISA method for early diagnosis of pregnancy in cows, along with rectal diagnosis, by determining the PAG content in cow blood serum samples. The average PAG concentration in blood serum in cows with a gestational age of 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 months was 1.590, 1.894, 1.416, 2.213, 1.784, 1.601 optical units , respectively. Although, theoretically, an increase in the concentration of PAG in the blood serum of cows was expected with increasing pregnancy. In two cases, a discrepancy between the results of the rectal examination and the results of the ELISA study was registered, which amounts to 3.5%.