Abstract
The study of the sanogenetic mechanism implementation and the adaptation of the body to extreme factors at the same time are hot topics for modern biology, physiology, and parasitology, as well as for poultry industry. Poultry is exposed to a whole range of extreme stress factors in the industrial sector. A special group is biological stressors, in particular, hematophagous ectoparasites D. gallinae. Studies conducted on High-Line laying hens on an industrial poultry farm showed that the cortisol concentration increased significantly in their blood by 3.6 (p<0.001) in dermanyssosis as compared to the control values. At the same time, the free triiodothyronine concentration in the experimental birds was significantly lower by 14.5% (p<0.001) as compared to the control. After the poultry building deacarization with the working emulsion 5% D-Cyphenothrin Emulsion of the drug, changes were detected in the hormonal supply of the hens from the experimental group. Thus, after dermanyssosis, they found an increase in the activity of follicular cells of the thyroid gland and a decrease tendency in the function of the adrenal glands that produces cortisol as compared to the control group. The described changes in the hormonal supply of the experimental hens’ organism indicate the activation of biophysiochemical recovery mechanisms of the birds’ organism and a tendency to optimize their homeostasis.
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