Zonal features of the spread of bovine leukemia virus in Dagestan

Abstract

Relevance. A contagious disease widespread in economic damage among cattle (cattle) is viral leukemia, registered in the Dagestan province since the 60s of the XX century. The region has distinctive features due to the natural and climatic conditions of the area. In this regard, the analysis of the zonal features of the spread of the cattle leukemia virus (VLCRS) remains an urgent task in the further study of the epizootic process and the development of a comprehensive program of health measures.

Methods. The object of serological research was livestock, kept on the territory of agricultural formations of all forms of ownership. In order to study the zonal features of the manifestation and persistence of the occurrence of VLCRS infection, a set of data was used, such as the number of identified, rehabilitated and disadvantaged points remaining on the end of the year, the number of seropositive animals in the immune diffusion reaction (AGID), reflected in the reporting documents of the Veterinary Committee of the Dagestan Republic for 2022.

Results. The results of monitoring studies determined the difference in the epizootic situation on viral leukemia, due to the zonal classification of rural areas and urban districts of the region. In particular, out of 138 leukemia-affected localities, found during the analyzed period, 134 (97,1%) were officially registered on the plain territory. Of these, 65 are in the mountainous and high-altitude zones, 4 is in the foothills. In the foothill province of Dagestan 4 (2,9%) points were noted. Consequently, the mountainous and high-altitude zones are free from leukemia infection and do not pose an epizootic danger.