Kolomak I. Pathomorphological changes in pigeons with salmonellosis and colibacillosis

The thesis paper is devoted to the improvement of pathomorphological diagnosis of salmonellosis and colibacillosis in wild pigeons, including epizootological, clinical and parasitological studies. Only a comprehensive approach to diagnosis provides the establishment of diagnostic pathomorphological criteria for salmonellosis and colibacillosis. To achieve the purpose of the thesis, clinical, bacteriological, biochemical, hematological, pathomorphological (pathological, histological, histochemical) and statistical research methods were used. The epizootic study revealed an increase in the relative number of wild pigeons (Columba livia) in the city of Poltava and in Kremenchuk, Poltava region. It was found that fluctuations in the wild pigeons’ number in urban populations of both cities are seasonal. The census was performed twice a year, in summer (July) and in winter (January). During the study period 2015 - 2018 in Poltava and Kremenchuk (Poltava region) it was found that the population of wild pigeons increased by 1.3 times, which is typical for both cities under study. Monitoring study in January 2018 revealed that the relative number of wild pigeons in Poltava is 85.32 / km2, and in Kremenchuk – 89.77 / km2 . The patent for the utility model Salmonella infantis KD-1 (U122170) can be used to obtain test strains for differentiation of isolates in the diagnosis of salmonellosis in animals. The obtained strain has typical properties and can be used as a reference test culture for the needs of veterinary microbiology. The patent for the utility model Citrobacter infantis KD-1 (U122171) can be used as a reference test culture for the needs of veterinary microbiology. Pathomorphological method for diagnosing colibacillosis and salmonellosis was implemented in Poltava Regional State Laboratory of the State Service of Ukraine for Food Safety and Consumer Protection, as well as in Hadiach, Kobeliaky, Kremenchuk, Lubny, Myrhorod, Pyriatyn and Shyshaky State Interdistrict Laboratories at the State Service of Ukraine for Food Safety and Consumer Protection.