PHYSIOLOGICAL INDICATORS OF THE BLOOD OF PRYKARPATTIAN SIMENTAL HEIFERS OF DIFFERENT TYPES OF CONSTITUTION

Abstract

The physiological and biochemical indicators of blood in heifers of the Simmental breed in the postnatal ontogeny of different types of constitution are given. Physiological selection index was calculated on the basis of peramination enzymes and body weight of heifers in the corresponding periods of growth. Already at the age of 6 months, it is possible to evaluate young animals, in this case heifers, according to the type of constitution.

The number of erythrocytes in the blood of heifers at 6, 12, 18 months of age was higher than that of the control group  respectively, by 4.25; 9.91; 9.82%. On average, during the entire growing period, the animals of the experimental group outnumbered the control analogues by 7.92%. According to the hemoglobin content in the blood, experimental heifers in the age periods of 6, 12, and 18 months exceeded the control heifers respectively by 8.20; 10.83; 10.90%. On average, during the entire growing period, the animals of the experimental group outnumbered the control analogues by 7.64%. According to the content of total protein in the blood serum of heifers at the age of 6, 12, 18 months, the experimental group exceeded the control analogues, respectively, by 7.47; 15.23; 8.64%. On average, during the entire growing period, the animals of the experimental group outnumbered the control analogues by 8.09%.

Another important indicator that also characterizes protein metabolism in the animal body is the activity of aminotransferases in blood serum. According to the activity of AST in blood serum, on average, over the entire period of cultivation, the animals of the experimental group exceeded the control animals by 11.78%. We found a similar pattern in the activity of ALT in blood serum. Thus, the heifers of the experimental group in terms of ALT activity in blood serum at 6, 12, and 18 months exceeded the control heifers, respectively by 8,13; 8.01; 10.28%.

According to the content of total sulfhydryl groups in the blood of heifers of the experimental group at 6, 12, 18 months, they exceeded the control analogues respectively by 27.50; 23.44; 18.01%. According to the content of residual SH-groups in the blood, the animals of the experimental group exceeded the control analogues by 24.34%.

The tested heifers in terms of total glutathione content in the age periods of 6, 12, and 18 months exceeded the control analogues respectively by 20.25; 7.44; 5.48%. A similar pattern was observed in the content of reduced glutathione in the blood of experimental animals. Thus,  individuals of the experimental group over the entire period of cultivation prevailed over the control peers by an average of 9.56%.