УДК 619:616.9-036.22;619:616.9
Authors:
Belousova D. A.,
Sazhaev I. M.,
Poryvaeva A. P.
Summary Changes in the immunoreactivity of cattle belonging to agricultural organizations of the Ural Federal District in diseases caused by Chlamydophila abortus, N. caninum, Eimeria bovis were studied. In the case of Chlamydophila abortus infection in cows, a change in the immunoreactivity of the body was observed in 43.5% of cases: a decrease in the functional activity of phagocytes by 1.5-1.6 times in combination with a 2.3-fold increase in the CEC level. B lymphocytes prevailed in the immune cell system in these cows. In the case of diseases caused by the protozoonotic pathogen N. caninum in cows, in 20% of cases, the development of an acute inflammatory reaction, an increase in the relative number of eosinophils by 2.5-2.8 times, a decrease in the functional activity of neutrophils by 1.5-1.7 times, and suppression of the B-cell link of immunity were noted. In 28% of cases - an increase in the absolute content of white blood cells to 15,8∙109/l with an increase in the relative number of eosinophils by 1.5 times. In 52% of cases in cows seroprevalent to N. caninum, immunohematological indicators corresponded to the physiological norm. In diseases caused by the protozoonotic pathogen Eimeria bovis, in young cattle in 66.7% of cases, the development of an acute inflammatory reaction, a violation of phagocytic activity by 1.8-2 times, suppression of the T-cell link of immunity was observed. In 33.3% of cases, calves infected with Eimeria bovis showed only a decrease in hemoglobin concentration by 5-8%. In complex immunological studies of blood, there were no significant differences with physiological parameters.
Key words: cattle, immunoreactivity of organism, chlamydia, coccidiosis, neosporosis.
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