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ANALYTICAL REVIEW OF CURRENT STATE THE EPIZOOTIC SITUATION OF CATTLE LEUKEMIA IN THE RUSSIAN FEDERATION

Leonid Fogel, Olga Kozyrenko, Vladimir Kuzmin, Eduard Dzhavadov, Yury Danko

Cattle leukemia is one of the most serious and complex diseases for the Russian Federation, including from an economic point of view. Among the main infectious diseases of cattle in the Russian Federation, cattle leukemia takes 40-65.8%. The prevalence of the disease is associated with the use of black-and-white as well as red cattle for crossing to increase milk production. It is among these breeds that cattle leukemia occurs most often. It is believed that in our country, the occurrence of leukemia is associated with the importation from Germany of pedigree cattle on the territory of Western Siberia, the Kaliningrad, Moscow, Leningrad regions in 1940, 1945-1947. At the present stage in the Russian Federation, about a third of the cattle livestock is infected with leukemia. As a result of what was held in 2015. Studies of more than 23 thousand samples of biomaterial and blood from cattle and small ruminants in 183 farms in 43 regions and their analysis found that 33.2% of them contained the genome of the causative agent of leukemia. The Veterinary Department of the Ministry of Agriculture of Russia states that today in the whole country there is no fundamental improvement in the epizootic situation of cattle leukemia. Numerous works by domestic leukemia experts indicate that leukemia causes significant economic damage not only with the forced culling of sick animals, which, as a rule, are the most highly productive, but also due to the fact that animals infected with leukemia virus: lose their breeding value and not subject to sale; reduced by 12-15% milk and meat productivity.

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