摘要：The analysis of hematological parameters of blood was carried out in highly productive cattle of black-and-white Holstein cows of the Netherlands selection on a robotic farm in the steppe zone of Kabardino-Balkaria. To establish the influence of physiological status controlled livestock (n = 64) was divided into three groups: dry (n = 13), fresh and inseminated (n = 20) and pregnant (n = 31). The analysis was conducted for 9 basic blood elements (WBC, Lim, Gran, Mid, RBC, HGB, HCT, MCH) with setting the limit of extreme variants and the difference between them, X ± mx, σ, Cv for each group in comparison with the average values for the entire sample. It was found that the grouping of cows makes it possible to differentiate the variability and average indicators of the blood composition taking into account the physiological status. The highest rates were noted in the group of pregnant cows, lower were in the group of just calving and inseminated cows, but had not tested for pregnancy yet. Heifer cow performance was more stable.
