Evaluation of the use of feed additives of humic nature by indices of leukocytes in rats after combined stress

Abstract

In response to the action of stress factors of different genesis in a living organism, a cascade of adaptive responses, which can neutralize functional disorders of homeostasis, is triggered. Combining the effects of various stress factors can cause excessive formation and accumulation of active forms of oxygen, which entails a number of pathological conditions that create the preconditions for the development of a large number of diseases. One of the indicators of the development of adaptation and the integral indicator of the body's state is the blood system, especially the leukocytic formula, whose redistribution makes it possible to analyze the nature of the effect and estimate the intensity of adaptive processes in the body due to functions that perform different forms of leukocytes. Leukocyte indices in which the parameters of the leukocyte formula were used, allow assessment of the degree of endogenous intoxication, the development of resistance and the character of cellular immunity for the influence of stress factors on the organism of animals and humans.The article considers the possibility of evaluating the preventive effect of natural antioxidants of humic nature on indices of leukocytes on the organism of rats after the influence of combined water-immobilization stress (WICS). for this, the animals were divided into five groups of 6 animals: 1- group of intact animals (control); 2-5 – experimental groups. Animals of all experimental groups were additionally received orally, individually with the help of a probe for 18 days, water, feed additives "Humilid" (at 5 mg / kg of body weight per active ingredient), "Eco-Impulse Animal" (at a rate of 2.5 mg / kg body weight) and vitamin E (at a rate of 50 mg / kg body weight). In animals, 2, 3, 4 and 5 groups simulated stress. It has been established that the effects of water-immobilization combined stress on blood of rats lead to the growth of cells of the leukocyte series, mainly due to the increase of eosinophils and rod-neutron neutrophils. The use of natural antioxidant, a feed additive "Humilid" in the pre-season period causes a decrease in the number of leukocytes by 41% compared to values in animals that received purified water during this period and did not differ from those in intact animals. The change in leukocyte indexes indicates functional changes in the body and the presence of a neutrophilic shear on the background of WICS in rats. Also, the effect of WICS leads to the release of the younger forms of neutrophils in the bloodstream, an increase in both the percentage of eosinophils and the quantitative. For preventive use of feed additives of humic nature, "Humilid" and "Eco-Impulse Animal" and vitamin E, the studied parameters are close to the values of the control group.