Abstract
The analysis of homeostasis was carried out on the basis of hematological blood parameters of highly productive Holstein cattle (average milk yield is 9300 kg, robotic farm, n = 106) which made it possible to establish average indicators and their variability in new, to a certain extent, extreme conditions. Analysis of the results obtained indicates that contrary to the established opinion about the relative stability of indicators of the hematological composition of blood, the organism of imported animals is experiencing rather strong overloads as evidenced by the high degree of variability of different blood elements. Some animals lose their fatness dramatically, even against the background of an average nutritional value of a balanced daily diet, sufficient for a milk yield of 30-33 kg of milk. High variability was noted in the number of lymphocytes (lim) - 64.3, medium cells (Mid) - 56.5 and granulocytes (Gran) - 42.5 percent. More stable indicators for the average volume of erythrocytes - 5.3, the content of hemoglobin in erythrocytes (MCH) - 8.7, the concentration of hemoglobin (HGB) - 9.1 and hematocrit number (NBT) - 10.6 percent.
Highlights
Dairy farming in Russia along with grain production is the main branch of the agricultural sector providing a daily turnover of funds which is very important for the life of any business entity
Purpose of the study: to establish the reaction of the body of animals to new conditions, the reasons for the shift in the morphology of individual elements, ways to stabilize cow homeostasis taking into account the physiological state of cows
The analysis of blood samples was carried out using the Gemalight 1270 hematological analyzer designed to measure the mass concentration of hemoglobin by the photometric method and the concentration of cells of the leukocyte, erythrocyte and platelet groups by the conductometric method
Summary
Dairy farming in Russia along with grain production is the main branch of the agricultural sector providing a daily turnover of funds which is very important for the life of any business entity. The issues of adaptation of imported livestock to various natural and climatic conditions, the preservation and implementation of the high genetic potential of productivity are due to the stability of the hematological composition of the blood. In this regard the establishment of the dynamics of the main elements of blood such as a reaction of metabolic processes in new conditions of feeding and maintenance is very urgent to manage the adaptation process. Purpose of the study: to establish the reaction of the body of animals to new conditions, the reasons for the shift in the morphology of individual elements, ways to stabilize cow homeostasis taking into account the physiological state of cows
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