Dynamics of an Interior Indicators of Holstein Breed Heifers and Their Mothers in the Transition Lactation Period

Abstract

The article deals with a comparative analysis of biochemical and morphological parameters of blood of Holstein cows during the transit period of lactation and obtained from them heifers of the dairy period. The content of globulin in the blood serum of group 1 cows at 1 month of lactation is 56,0 g/l, at 3 months 53,9 g / l, which is significantly higher than the level in other groups (P≤0,05). In group 3 cows at the 3rd month of lactation, creatinine significantly increased to 74,8 mmol/l (P≤0,05). The blood content of alkaline phosphatase in 1 month of lactation in all examined animals is normal. The blood glucose level in cows is kept in the range of 3,6-4,0 at 1 month and 2,7 – 4,3 at 3 months of lactation (at the norm of 2,0 – 4,8 mmol/l). The concentration of total blood protein in calves at 3 months is within the normal range, but the variation was from 70,3 in group 1 to 84,4 g / l in group 3 (P≤0,05). Significant changes in the serum creatinine content at the 3rd month of life of experimental calves of group 3 up to 73,6 mmol/l (P≤0,10) within the normal range determine the intensity of adaptive mechanisms. Glucose in the blood serum of heifers is at the upper limit of the norm in groups 1 and 2 – 4,9 mmol/l (the norm is 4,8 mmol/l), which indicates a fairly high energy security of the calves ' diet. Total bilirubin in the blood serum of heifers of groups 1 and 2 is slightly higher than normal (the upper limit of the norm is 8,15) – 9,3 and 8,7 mmol/l. By the third month, the total bilirubin content in the blood of group 2 heifers increased to 10,7 mmol/l (P≤0,05), in the rest – within the normal range.