Bovine Eimeriosis in the Tyumen Region

Livestock farming in the Tyumen Region is one of the main branches of the agroindustrial complex. Despite this sector development, the issue of invasive diseases of cattle remains crucial. Eimeria infections are the most common parasitosis and most difficult to control. The study was conducted at the premises of the Department of Infectious and Invasive Diseases of the State Agrarian University of the Northern Trans-Urals, Tyumen, in 2022–2023. We examined 405 fecal samples taken from cows of various age groups from different villages of the Zavodoukovsky and Omutinsky Districts. The studies were carried out using the Darling’s method. In our studies, it was found that the prevalence varied from 10 to 100% in the Zavodoukovsky and Omutinsky Districts, and the number of oocysts in the field of view of the microscope was from 1 to 1,216 specimens. High prevalence and intensity rates of eimeriosis were recorded in calves aged 0 to 12 months, and adult animals including heifers were carriers of the pathogens of this protozoan disease. Oocysts were also found in the samples both as monoinfections and as part of mixed infections (Eimeria + Strongylata).