Dynamics and Number of T- And B-Lymphocytes in the Blood of Replacement Young Cattle after Injection of Tissue Biostimulator

Abstract

The article presents the results of a study of the effect of a tissue preparation obtained from offal and slaughter reindeer by-products using a patented technology on the level and dynamics of blood T-and B-lymphocytes in young cattle of black-motley breed. Experimental studies were carried out in 2020 on the basis of "Uchkhoz Prigorodnoye" JSC in the Industrial District of Barnaul, Altai Territory on one month old heifers with an average live weight of 51,0 kg. Heifers of the experimental group (n = 10) got the tissue preparation injections once subcutaneously at a dose of 3.0 ml/head, and animals of the control group (n = 10) got saline in the same dose and multiplicity. Studies have shown that the introduction of the preparation increases the relative number of activated lymphocytes (bE-rosetting cell) by 1.5% (p≤0.05), helper-inductors (rE-rosetting cell) by 1.8% (p≤0.05), B-lymphocytes (EM-rosetting cell) by 1.7% (p≤0.05), the absolute number of activated lymphocytes (bE-rosetting cell) and B-lymphocytes (EM-rosetting cell) by 48.1% (p≤0.05) and 46.4% (p≤0.05) in comparison with the control. The relative number of killersuppressors (cE-rosetting cell) in the blood of the heifers of the experimental group decreased by 2.6% (p≤0.05), and the ratio of the ratio of helper-inductors and killer-suppressors was increased by 18.1% (p≤0.05), in comparison with animals of the intact group.