The peculiarities of pathomorphological manifestations of chronic myeloid leukemia in hens

Pathomorphological picture of the organs and tissues of dead and involuntarily killed chickens with clinical signs of chronic myeloid leukemia was studied, macro-microscopic changes characteristic pathognomonic for underlying disease, as well as the complications which developed against their background, the differential diagnosis of infectious diseases with similar clinical findings was established and morphological features. The objects of the study were laying hens kept on one of the farms of the Krasnoyarsk Territory during 2018-2019. The autopsy was performed on 12 corpses of birds. The material intake for histological research was taken - fragments of bone marrow, spleen, liver, kidney, heart, small and large intestine, lung, pancreas, ovary, brain tissue sections, sections were made. The cuts were made with the help of Tekhnom MZP-01 microtome, stained with Ehrlich hematoxylin and eosin. To conduct serological studies of chicken blood serum for the presence of antibodies to ALV-J, the blood was collected from birds with clinical signs of the disease, - 6 heads, specific antibodies came to light in all cases in reaction of IFA...