Analysis of the spread of cattle leukemia in the Republic of Kalmykia
https://doi.org/10.53315/2949-1231-2023-2-4-79-87
Abstract
This article presents an analysis of the epizootic situation regarding bovine leukemia for the period 2020-2022. Studies have been conducted to identify the viral agent, bovine leukemia virus (BLV) using various methods, including immunodiffusion reaction (IDR), hematological analysis and enzyme-linked immunosorbent assay (ELISA).
According to the research results, a decrease in the intensity of the epizootic situation regarding bovine leukemia in the specified period was revealed. A positive reaction according to RID was shown by 0.02-0.15% of animals, which is a small proportion of the total number of those studied. However, hematological blood parameters indicated the presence of VLCR in 0.37-75.38% of animals, which indicates a significant spread of leukemic infection.
It is also noted that infestation of animals was observed in some areas, namely in Gorodovikovsky, Iki-Burulsky, Maloderbetovsky, Tselinny districts and the city of Elista. The largest number of infected animals was detected in the Gorodovikovsky district (12 animals), Iki-Burulsky district (50 animals), Tselinny district (12 animals) and the city of Elista (10 animals). The incidence rates in these areas were 4.8%, 0.09%, 0.03% and 0.67%, respectively.
Thus, the analysis indicates a decrease in the tension of the situation regarding leukemia in cattle, but there is a significant prevalence of this infection in some regions. This data is important for monitoring and taking measures to combat the spread of the disease
About the Authors
A. V. UbushievaRussian Federation
Candidate of Biological Sciences, senior lecturer
Elista
V. S. Ubushieva
Russian Federation
Assistant
Elista
N. V. Chimidova
Russian Federation
Candidate of Biological Sciences, Associate Professor
Elista
B. K. Bolaev
Russian Federation
Doctor of Agricultural Sciences, Professor
Elista
A. Ya. Gendzhiev
Russian Federation
Candidate of Veterinary Sciences, Associate Professor
Elista
References
1. Abakin, S.S. Leukosis and oncovirus infection of cattle in the North Caucasus zone/ S.S. Abakin, L.G. Burba // Sat. tr. VIEV.- 1991. -T.70.- P. 6-9.
2. Abakin, S.S. Modern view on the features of intravital diagnosis and immunogenesis in calves in the mother-offspring system, with leukemia in cattle / S.S. Abakin, S.V. Krivoruchko, D.G. Ponomarenko, E.A. Borshchev // Veterinary pathology.-2010. -No. 1.- P. 6-9.
3. Blagits M.G. et al. Immunological consequences of viral infection of bovine leukemia. Res Vet Sci. (2017) 114:109–16. 2017. 03.012
4. Galeev, R.F. Theoretical justification, experimental confirmation of the transmission routes of the bovine leukemia virus, improvement of diagnostic methods and measures to combat it: PhD thesis in veterinary sciences / Galeev R.F. – Ufa, 2000. – 276 p.
5. Gendzhiev, A.Ya. Molecular genetic control for leukemia in cattle in the system of health-improving measures of cattle breeding farms in Kalmykia: PhD thesis in veterinary sciences / Gendzhiev A.Ya. – Stavropol, 2018. – 154 p.
6. Gulyukin, M.I. Monitoring of the epizootic situation regarding bovine leukemia in commercial and breeding farms of the Russian Federation for 2014-2015 // M.I. Gulyukin, I.I. Barabanov, L.A. Ivanov et al. // Journal. Veterinary and nutrition. – 2016. – No. 4. – P.4-41.
7. Gulyukin, M.I. Monitoring system for leukemia in cattle in the Russian Federation / M.I. Gulyukin, G.A. Simonyan, L.A. Ivanova and others // Edited by Academician of the Russian Academy of Agricultural Sciences M.I. Gulyukina – VIEV: Moscow, 2007.
8. Gendzhieva O.B. Epizootological monitoring of leukemia in cattle in the Republic of Kalmykia/ Gendzhieva O.B. Gendzhiev A.Ya. // News of Nizhnevolzhsky State University, 2012. – P.1-5.
9. Kamalov, B.V. Leukosis of cattle. Methodological manual / B.V. Kamalov, F.F. Zinnatov, N.Z. Khazipov, A.Kh. Volkov // Methodological manual, Kazan, 2005. – P.37.
10. Mager, S.N. Measures for the prevention and control of cattle leukemia in private plots of citizens / S.N. Mager, P.N. Smirnov, V.V. Khramtsov, N.A. Osipova, T.A. Agarkova // Bulletin of NSAU.-2011.- No. 1 (17).- P.100-104.
11. Panei T. et al. Assessment of the proviral load of bovine leukemia virus (BLV) carried by a subset of lymphocytes in BLV-infected cattle at the subclinical stage of enzootic bovine leukemia using BLV-cocomo-qPCR. BMC Vet Res. (2013) 9:95. doi: 10.1186/1746-6148-9-95
12. Ponomarenko, D.G. Leukemia in the structure of the main infectious pathologies of cattle in the Russian Federation, the current epizootic situation with bovine leukemia in the Stavropol Territory [Text]/ D.G. Ponomarenko, S.S. Abakin, E.A. Borshchev // Sat. scientific Art. according to mat. 72nd scientific-practical conf. SSAU. – Stavropol, 2008. – P.109-111.
13. Sandev N., Koleva M., Binev R., Ilieva D. Effect of enzootic bovine leukemia virus on the incidence of subclinical mastitis in cows at different stages of infection. Veterinarian Arch. (2004) 74:411-6.
14. Tabakaev, V.V. Analysis of practical ways to improve the health of cattle farms disadvantaged by leukemia /V.V. Tabakaev// Current issues in veterinary medicine: Materials and scientific-practical conference. fak. vet. honey. NGA-U. – Novosib. state agrarian Univ. – Novosibirsk – 2001. – S. 16 – 18.
15. Free MS, Bovine leukemia virus: a serious hidden threat to proper immune responses in cattle. Veterinarian Immunol Immunopathol. (2015) 163:103–14. doi: 10.1016/j.vetimm.2014.11.014
Review
For citations:
Ubushieva A.V., Ubushieva V.S., Chimidova N.V., Bolaev B.K., Gendzhiev A.Ya. Analysis of the spread of cattle leukemia in the Republic of Kalmykia. The Agriculture and Ecosystems in Modern World: Regional and Inter countries’ research. 2023;2(4):79-87. (In Russ.) https://doi.org/10.53315/2949-1231-2023-2-4-79-87