Electrophoretic Mobility of Red Blood Cells and Micronucleus Test in Exfoliated Buccal Cells as Stress Intensity Markers

The purpose of this study was to investigate the electrophoretic mobility of red blood cells (RBCs), cytomorphological and cytogenetical indices in exfoliated buccal epithelial cells of rats during the development of stress reaction. Experiments were carried out on 60 white non-pedigree pubescent rats weighing 180-220g. Both the single and the repeated adrenalin injections provoked a decrease in the level of the RBC electrophoretic mobility. With a single adrenalin injection, the changes in RBC electrophoretic mobility are not so abrupt, with the subsequent development of the adaptive response and reparation of cytogenetic damage. With repeated adrenalin injections, the changes in RBC electrophoretic mobility are abrupt, and the number of pathological epithelial cells increases

INFLUENCE OF TECHNOLOGICAL STRESS ON NON-SPECIFIC RESISTANCE OF THE ORGANISM OF COWS

Background. The intensification of animal husbandry leads to a violation of the adaptive capabilities of the body, a decrease in productivity and natural resistance of animals. The study of nonspecific factors of protection of the cow's body will allow us to develop ways to increase the immune status and as additional information can be used in breeding work for the selection of highly resistant parent pairs. Purpose. The study of the cellular and humoral link of nonspecific resistance in the development of a stress reaction in cattle after the action of technological stress on the body of cows. Materials and methods. The work was carried out on 20 clinically healthy highly productive black-and-white cows. The stressor for the cows was the regrouping, the change of attendants, the conduct of veterinary and sanitary manipulations. The total number of leukocytes, leukogram, bactericidal and lysozyme activity of the blood serum of cows were studied by standard clinical and laboratory methods and the morphology of leukocytes on a scanning electron microscope before and 3, 14, 30 days after technological stress. Results. On days 3-14 after stress, leukocytosis, neutrophilia, monocytosis and lymphopenia were detected relative to the initial level. When using high-resolution microscopy using a scanning electron microscope, the appearance of NEToses in the blood of cows after technological stress was detected. A decrease in the bactericidal activity of serum on the 3rd day after stress with its subsequent increase was established, on the contrary, an increase in lysozyme on the 3rd day was accompanied by its subsequent decrease by 30 days after the technological stress relative to the initial level. Conclusion. The data obtained indicate that the body's defenses are a dynamic physiological indicator, which must be considered as a general resistance of the cattle body to stressors in order to prevent the disruption of the body's adaptive capabilities