Epizootology of helminthosis in cattle in Gorny Altai

Abstract

The purpose of the research: is to conduct a comparative assessment of the infection of cattle with helminths and the structure of helminthic complexes in various natural provinces of Gorny Altai.Materials and methods. Coproovolarvoscopic examinations of about 2.4 thousand of cattle from various farms of the Altai Republic were carried out. Based on their results, the animal’s infection (the prevalence of infection, PI, %) with helminths in various natural provinces was characterized. The structural indices of various taxa of helminths (SI) have been calculated, which reflect their weight in the structure of the parasite complex.Results and discussion. Cattle in the Altai Republic are mostly infected with nematodes (51.4%). The indicators of the animal infection with trematodes and cestodes were significantly lower and amounted to 17.4 and 5.2% respectively. Nematodes dominate in the structure of animal helminthocenosis in various provinces. Their total SI varies from 66.8 to 76.8. The classes of trematodes and cestodes account for 8.8–26.3 and 4.5–14.4 respectively. The maximum SI was registered in Strongylata of the digestive tract (45.2), the subdominant position is occupied by trematodes: Dicrocelium sp. (SI – 13.2) and Fasciola hepatica (SI – 11.5). Moniezia sp. SI was quite low and amounted to 4.7.