Biochemical blood parameters of pregnant cows infected with BLV

The aim of the study is to investigate metabolic disorders in pregnant cows infected with bovine leukosis virus (BLV) and to determine their relationship with lymphocytic leukocytosis. The object of the study was the blood of BLV-infected cows (n = 8) and leukemia-free (n = 5) pregnant cows (2-9 years old, gestation period 2-7 months) of dairy productivity from a livestock farm in the Amur Region. In BLV-infected cows, the number of leukocytes ((17.2 ± 2.66) ∙ 109/l) and lymphocytes ((10.5 ± 2.88) ∙ 109/l) exceeded normal physiological parameters. Protein metabolism was characterized by low albumin levels ((26.8 ± 2.57) %) and high beta-globulin levels ((31.2 ± 1.12) %). Hypoalbuminemia and a sharp selective increase in beta-globulin levels are characteristic of beta-globulin plasmacytomas. There was a positive relationship between the lymphocyte count and beta-globulin levels (r = 0.1, p