Yekaterinburg, Russian Federation
Yekaterinburg, Russian Federation
Abstract. The study of the features of the leukemic epizootic process in agricultural organizations of the Republic of Bashkortostan was carried out. The object of the study was cattle of different groups, including calves before drinking colostrum, heifers, springer heifers, pregnant and dairy cows. The purpose was to develop general schemes of anti-leukemic measures that guarantee a reduction in the recovery period for disadvantaged areas and a decrease in the level of infection of cattle with the leukemia virus. The work was carried out in the leukemia laboratory of the department for monitoring and predicting infectious animal diseases of the Ural Federal Agrarian Scientific Research Center of the Ural Branch of the Russian Academy of Sciences. Methods. A retrospective and operational analysis of data on the laboratory methods used for the diagnosis of bovine leukemia virus was carried out. Scientific novelty consists in obtaining new knowledge about the problems of diagnostics of the bovine leukemia virus among the populations of farm animals in the Republic of Bashkortostan. The features of the leukemic epizootic process have been studied: sources, transmission routes of the leukemia virus, level of infection and incidence of bovine leukemia virus in the surveyed farms in the regions of the Republic of Bashkortostan. Results. On the basis of the data obtained, general schemes of anti-leukemic measures have been developed, which guarantee a reduction in the recovery time of disadvantaged areas and a decrease in the level of infection of livestock with the leukemia virus.
bovine leukemia; diagnostics; epizootic process; Republic of Bashkortostan; diagnostic studies; polymerase chain reaction; animal epidemic countermeasures
1. Bezborodova N. A., Kozhuhovskaya V. V. Znachenie molekulyarno-biologicheskih metodov issledovaniya dlya diagnostiki infekcionnyh bolezney krupnogo rogatogo skota // Aktual'nye voprosy veterinarnoy biologii. 2018. № 4 (40). S. 22-25.
2. Donnik I. M., Shkuratova I. A., Krivonogova A. S., Petropavlovskiy M. V. [i dr.] Metody laboratornoy diagnostiki leykoza: uchebnoe posobie. Ekaterinburg: Ural'skiy gosudarstvennyy agrarnyy universitet, 2015. 48 s.
3. Donnik I. M., Krasnoperov V. A., Tatarchuk A. T. [i dr.] Rezul'tativnost' kompleksnyh meropriyatiy bor'by s leykozom krupnogo rogatogo skota na Srednem Urale // Voprosy normativno-pravovogo regulirovaniya v veterinarii. 2015. № 2. S. 42-46.
4. Kuznecova T. V., Kuznecov A. A., Kirillova S. V. Tehnicheskiy reglament TS «O bezopasnosti moloka i molochnoy produkcii» i ekonomicheskie aspekty ego realizacii molochnymi tovaroproizvoditelyami Rossii // Agroprodovol'stvennaya politika Rossii. 2015. № 12 (48). S. 35-38.
5. Sviridenko G. M. Problema bezopasnosti molochnyh produktov v svyazi s leykozom krupnogo rogatogo skota // Molochnaya promyshlennost', 2017. № 8, S. 13-16.
6. Bartlett P. C., Sordillo L. M., Byrem T. M., et al. Options for the control of bovine leukemia virus in dairy cattle. Journal of the American Veterinary Medical Association. 2014. No. 244. Pp. 914-922.
7. De Brogniez A., Mast J., Willems L. Determinants of the Bovine Leukemia Virus Envelope Glycoproteins Involved in Infectivity, Replication and Pathogenesis // Viruses. 2016. No. 8 (4). P. 88. DOI:https://doi.org/10.3390/v8040088.
8. Frie M. C., Coussens P. M. Bovine leukemia virus: a major silent threat to proper immune responses in cattle // Veterinary Immunology and Immunopathology. 2015. Vol. 163 (3-4). Pp. 103-114. DOI:https://doi.org/10.1016/j.vetimm.2014.11.014.
9. Gulyukin M. I., O Kapustina. V., Ezdakova I. Yu., Valtsiferova S. V., Stepanova T. V., Anoyatbekov M. Detection of specific antibodies of classes G and M to bovine leukemia virus in the blood serum [e-resource] // Problems of Virology, Russian journal. 2019. No. 64 (4). Pp. 173-177. URL: https://doi.org/10.36233/0507-4088-2019-64-4-173-177 (appeal date: 01.06.2020).
10. LaDronka R. Impact of bovine leukemia virus on herd level production indicators on U. S. dairy farms // In: 97th Annual Meeting of the Conference of Research Workers in Animal Diseases. Chicago, IL. 2016. Vet. arhiv 89 (6). Pp. 785-798.
11. Nekouei O., VanLeeuwen J., Stryhn H., Kelton D., Keefe G. Lifetime effects of infection with bovine leukemia virus on longevity and milk production of dairy cows. Preventive Veterinary Medicine. 2016. No. 133. Pp. 1-9.
12. OIE World Organization for Animal Health. Enzootic Bovine Leukosis. World Animal Health Infection Database, Disease information, List of countries by disease situation [e-resource]. URL: http://www.oie.int/wahis_2/public/wahid.php/Diseaseinformation/statuslist (appeal date: 10.02.2019).
13. Olaya-Galán N. N., Corredor-Figueroa A. P., Guzmán-Garzón T. C., Ríos-Hernandez K. S., Salas-Cárdenas S. P., Patarroyo M. A.,Gutierrez M. F. Bovine leukaemia virus DNA in fresh milk and raw beef for human consumption. Epidemiology & Infection. 2017. Vol. 145. No. 15. Pp. 3125-3130. DOI:https://doi.org/10.1017/S095026881700222.
14. Petropavlovsky M. V., Donnik I. M., Bezborodova N. A. Epizootological and phylogenetic assessment of the bovine leukemia virus on the territory of the Russian Federation // Innovations and food security. 2018. No. 3 (21). Pp. 161-165.
15. Petropavlovskiy M., et al. Epizootiological and genetic characterization of the bovine leukemia virus in the Russian Federation - evaluation of bovine leukemia virus in Russia // Veterinarski Arhiv. 2019. No. 89. Pp. 785-798.
16. Valikhov A. F. Bovine leukemia: disease control and prevention (Review) // Dairy Industry. 2018. No. 9. Pp. 74-77.
