THE CHANGES IN BLOOD PARAMETERS OF COWS INFECTED BY LEUCOSIS IN CASE OF COMPLICATIONS WITH ACUTE ANAPLASMOSIS
https://doi.org/10.31677/2072-6724-2019-53-4-48-54
Abstract
The authors found out that some districts of the Tomsk region are unfavourable in respect to bovine anaplasmosis. In enzootic areas with bovine anaplasmosis the bovine leukemia was observed in susceptible animals. The research focuses on hematological and immunological changes of the blood of cows infected with leukemia during the acute anaplasmosis. That was found out in spring while intense activity of ixodids (the end of April). The researchers arranged two groups of Black-and-White cows aged 2.5-3 years infected with leukemia virus. The 1st group was infected with acute anaplasmosis cow leukemia virus, the 2nd group (control) was infected with anaplasm-free cow leukemia virus. The changes in the hematological pattern of cows infected with leucosis in case of complications with acute anaplasmosis consist in eosinophilia, neutropenia, lymphocytosis and monocytopenia. The changes in the immune system of cows were less noticeable and characterized by a moderate increase in IgG and high titers of antibodies to leukemia virus. The researchers assume that there is a significant sensitization of the humoral component of the immune system of cows infected with leucosis in case of complications with acute anaplasmosis. The noticeable lymphocytosis in the certain cows infected with leukemia virus in case of complications with acute anaplasmosis should be taken into account when making a diagnosis for cattle leukemia. This occurence in the hematological picture of blood can be characterized as a temporary leukemia reaction, causing a false positive result of hematological test on leukemia.
About the Author
S. I. Loginov
Novosibirsk State Agrarian University
Russian Federation
Doctor of Biological Sc., Associate Professor
Russian Federation
Doctor of Biological Sc., Associate Professor
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Review
For citations:
Loginov S.I. THE CHANGES IN BLOOD PARAMETERS OF COWS INFECTED BY LEUCOSIS IN CASE OF COMPLICATIONS WITH ACUTE ANAPLASMOSIS. Bulletin of NSAU (Novosibirsk State Agrarian University). 2019;(4):48-54. (In Russ.) https://doi.org/10.31677/2072-6724-2019-53-4-48-54
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