BIOCHEMICAL BLOOD PROFILE OF COWS UNDER THE CONDITIONS OF SARYAGASH LLP, KOSTANAY REGION

Abstract

The article presents the results of a study on the biochemical blood profile of Holstein cows from the breeding herd of “Saryagash” LLP, Kostanay region. The research was conducted on clinically healthy animals (n = 19), divided into six age groups depending on the number of calvings (from the 1st to the 8th). The biochemical analysis included indicators of protein, mineral, and energy metabolism, as well as enzymatic activity and pigment exchange.

The average values of protein metabolism were within the normal range (total protein – 77.14±2.89 g/l, albumin – 3.19±0.09 g/dl, urea – 12.5±0.75 mg/dl). Mineral metabolism was characterized by physiological concentrations of calcium (2.25±0.09 mmol/l), phosphorus (1.48±0.06 mmol/l), and magnesium (1.02±0.04 mmol/l), while in older groups a tendency towards a decrease in Ca and P levels was observed. In energy metabolism, glucose (2.77±0.31 mmol/l), cholesterol (86.7±7.4 mmol/l), and creatinine (1.23±0.05 mg/dl) remained within physiological limits. Alkaline phosphatase activity (84.0±8.6 U/L) and total bilirubin level (8.6±2.5 µmol/l) were also within normal ranges.

Thus, the biochemical blood profile of Holstein cows across all six age groups generally corresponds to physiological standards; however, in animals with 6–8 calvings, signs of age-related metabolic changes were detected.