Objective epizootic situation on cattle leukemia in Dagestan

Based on reliable factual material, the article presents an analysis of the objective epizootic situation on cattle leukemia that developed in 2020 in Dagestan Republic as a whole and in individual rural areas, urban districts and areas of distant pasture farming. The number of unfavorable points, cases of illness and the coefficient of focality are indicated. The level of infection of animals with BLV for the analyzed period was 1,35 %, the incidence rate - 17,43 %. At the same time, the value of the focal incidence indicator was 3,45. BLV infection is registered in most municipal districts and has an uneven distribution. According to epizootological data for the period under review, 11 administrative districts, the cities Dagestanskie Ogni, Derbent, Kizlyar and Bakres, Derbent, Ulankholsk zones of distant-pasture animal husbandry, are safe in terms of BLV infection. In 30 municipalities, the number of animals infected with the leukemia virus ranged from 0,10 to 3,00 %, in other 10 districts - from 3,25 to 7,51 %. At the beginning of 2020, there were 111 leukemia-unfavorable points in the region. During the year, 24 new foci were identified, 19 foci of infection were healed and by the end of the year 116 remained, including 38 - in the public sector, 78 - in the individual. The values on morbidity and ill-being are of an increasing nature. This situation is explained by the introduction of large-scale anti-leukemic measures of serological diagnostics, which made it possible to concentrate the implementation of health-improving measures in farms with the most widespread infection. In this situation, one of the ways to solve the problem is full coverage of diagnostic studies of animals, isolated rearing of young animals, exclusion of joint keeping, grazing and calving of healthy and infected animals, increasing the frequency of serological testing of seronegative animals until two consecutive negative results are obtained.