Biochemical composition of blood of cows of Aberdeen Angus breed of domestic and import selection

In general blood bio-chemical indices of cattle indicate high adaptation ability of cattle of Aberdeen Angus breed to the changing external environment in the freezing conditions of winter in Belarus. In the analysis of biochemical parameters of blood serum of experimental animals it was determined that the amount of albumins in cows of import selection was 40,19 g/l, which was 3,91 g/l less than in cows of domestic selection. By α₁-globulins content import selection cows differed from the control group by the lowest indices - 2,43 vs. 2,47 g/l, respectively. Ratio of albumin/globulin in experimental cows was 0.71 units (imported) and 0,77 units (domestic). General protein in the blood of cows from both groups was 96,62 to 101,48 g/l, while it was 4,86 g/l (or 5,0 %) more in domestic selection animals. Calcium content at value 3.2 mmol/l (imported selection animals) was below 0,67 mmol/l (or 17,3 %) compared with group of domestic selection animals. Level of phosphorus and iron in blood of experimental animals was in the range of 1,91 to 2,0 mmol/l and from 11,08 to 12,76 mcmol/l.

adaptation, breeding stock, Aberdeen Angus breed, cows, hematology, biochemical composition, albumins, globulins, total protein

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