Abstract
The work is devoted to the study of pathologic-anatomical and microscopic changes in tubular (duodenum, jejunum, cecum) and parenchymal (liver, lungs, spleen, kidneys) organs of quails for eimeriosis caused by E. tenella, E. necatrix, E. acervulina. The work was carried out on the basis of the pathomorphological laboratory of the Department of anatomy and histology of Zhytomyr national agroecological University (Zhytomyr, Ukraine). Average invasion intensity after E. tenella, E. necatrix, E. acervulina was 4,3, 6,1 and 4,3 oocytes in 1 g of dung. The generally accepted classical methods of pathomorphological studies were used. It is established that the development of the pathological process in the body of quails with eimeriosis has a multi-organ character. The main pathologic-anatomical and microscopic changes were revealed in the cecum - serous catarrhal and hemorrhagic inflammation, necrosis of mucosal structures, the presence of Eimeria of different stages of development at the base of the villi and around the crypts of the mucosa, among the components of serous and hemorrhagic exudate in the lumen of the intestines. Lesions of the duodenum and jejunum were manifested by catarrhal mucous inflammation. Regarding parenchymal organs, granular and fatty dystrophy of hepatocytes, venous hyperemia, necrosis, infiltration of the parenchyma by lymphocytes were registered in the liver; in lungs-stagnant hyperemia and edema; in spleen-hypoplasia of lymphoid nodules, growth of connective tissue, infiltration of parenchyma by lymphoid cells; in kidneys-hyperemia and hemorrhages, granular dystrophy of epithelial cells of renal tubules, proliferative intracapillary glomerulonephritis. Pathomorphological changes in the studied organs of quails infested with E. tenella, E. necatrix, E. acervulina. Eimeria species are established, expand the available information on the pathogenesis of eimeriosis in birds and can be used as tests of differential diagnosis and in the development, organization of scientifically based therapeutic and preventive measures in quail farms of Ukraine.
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