Abstract
The results of evaluating the effectiveness of health-improving measures against cattle leukemia in the Pavlodar region are presented. In the Pavlodar region in 2018, 7065 heads of cattle were examined for leukemia, 434 reacted positively, the percentage of infection was 4.8. In 2019, 5354 heads were tested for leukemia, 187 responded positively, the percentage of infection was 3.9. In 2020 (6 months), 3394 heads were examined, 139 heads reacted positively, the percentage of infection was 5.4. Despite the health improvement measures carried out in the region, leukemia of cattle is still registered in five out of 13 districts. At the same time, in some regions, the number of animals studied (Lebyazhinsky, Zhelezinsky, Irtyshsky, Uspensky) noticeably decreases, and in some cases, the number of positively reacting animals increases two or more times. So, for example, in Zhelezinsky district, with a decrease in the number of animals studied (from 1672 to 456), the percentage of infection increases from 0.42 to 9.65. Thus, the results of the study showed that the Pavlodar region was and remains an unfavorable region for bovine leukemia. Recreation measures do not give the proper efficiency and the region remains among those who are not safe for leukemia in cattle along with Kostanay (6.6%), North Kazakhstan (4.7%), East Kazakhstan (3.7%), and studies in 2020 showed an increase in the incidence of up to 5.4%.