Abstract
The article presents the results of studying the effect of a phytopreparation based on needles on the cellular and humoral immunity of broiler chickens of the ROSS 308 cross under vaccine stress. For the experiment, 4 groups of 25 heads were formed. Chickens of the control group were on the main diet. In the diet of the 1st experimental group, a phytopreparation based on needles was introduced with water, the 2nd and 3rd - with food. At the age of 14 days, the chickens were vaccinated against Newcastle disease (ND). In broiler chickens vaccinated against ND and receiving the phytopreparation with feed, a more pronounced stimulating effect was noted, characterized by an increase in the number of T-lymphocytes by 1.3-1.8 times, cytotoxic T-lymphocytes - by 1.1-1.9 times , as well as the activity of cationic proteins - by 0.1-0.6 c.u. When drinking a complex of biologically active substances, only activation of intracellular antimicrobial peptides was observed, but in a longer period after vaccination.
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