The object of research: processes that characterize the physiological mechanisms of formation of functional adaptation of Peking ducks, in critical periods of postnatal ontogenesis and in some stages of adaptation syndrome when included in the diet of BACD "Primix Bionorm-K" and feed additive "Biovir".
The purpose: to determine the functional state, immunobiological reactivity and physiological mechanisms of formation of immunological adaptation of Peking ducks under the influence of technological stress when including in the diet of biologically active feed additive "Primix Bionorm-K" and feed additive "Biovir".
Research methods: clinical-physiological and hematological - to determine the physiological state of the organism, immunological - to determine the level of immunobiological reactivity, microbiological - to establish the quantitative and qualitative composition of intestinal microflora, macroscopic - to clarify the topography and linear measurements of intestinal immune structures, determination of absolute mass, shape, color and consistency of thymus, Fabricius bursa, spleen, adrenal glands, thyroid gland, morphometric and microscopic - to determine the cell composition of the studied organs, to determine the size of individual components, statistical - to process digital indicators of research results.
Scientific novelty: For the first time a systematic study of the peculiarities of the formation of immunophysiological status of Peking ducks in critical periods of postnatal ontogenesis, which significantly complements and deepens modern ideas about the processes that lead to changes in functional adaptation of their body under technological stress. Physiological mechanisms of formation of immunological adaptation of an avian organism in the productive oviposition period under the action of transport stress in it’s separate stages are established, which is shown by decrease in oxygen transport function of blood, destabilization of indicators of nonspecific resistance, reduction of morphological signs of immunocompetence in structure of central-adrenal and hypothalamic-adrenocortical systems. Increased productivity and safety of livestock, normalization of adaptive-compensatory reactions, redistribution of microbial balance of caeca of ducks after transportation when included in the diet of BAFA "Primix Bionorm-K" and additives "Biovir", which allows them to be used for effective formation adaptation and prevention of the development of the adaptation syndrome in the body of the bird.
Proposed: For effective formation of immunological adaptation of Peking ducks under the influence of transport stress and leveling the consequences of adaptation syndrome in the productive egg-laying period, it is recommended to use BAFA "Primix Bionorm-K" and "Biovir" from 240 to 270 days of age according to the instructions. According to the indicators of the development of adaptive reactions and economic efficiency, it is advisable to use in the diet of poultry "Primix Bionorm-K".
Implemented: Scientific developments have been implemented in the experimental farm of Lviv region, Pustomyty district "Myklashivske" p. Miklashiv.
Based on theoretical generalizations and research, Primix Bionorm-K and Biovir feed additives for uterine ducks have been developed and put into practice in order to increase the body's adaptability, increase weight gain and strengthen their body's defense systems and prevent the development of stress phenomena related to the technology of their transportation.
The obtained results allowed to deepen knowledge about physiological mechanisms of formation of functional adaptation of Peking ducks in critical periods of postnatal ontogenesis and in separate stages of adaptation syndrome related to their transportation technology and on this basis to develop more effective methods of correction of detected disorders.
The results obtained from the study of physiological mechanisms of immunological adaptation of Peking ducks in critical periods of ontogenesis under the influence of technological stress can be used in the educational course of "Normal and pathological physiology", "Histology", "Immunology and microbiology" for students of the Faculty of Veterinary Medicine –V level of accreditation and in research work.
