Popis: |
Cattle demodecosis in the Russian Federation is ubiquitous. As a result of studies in the period from 2002–2018 in the Tyumen region it was established that this region is no exception for the spread of demodectic invasion among cattle. Our studies have shown that age-related reactivity and technological decisions in keeping animals have an effect on the extent of the invasion of demodecosis. So, in the conditions of the Tyumen region, cattle are affected by demodecosis at the age of one year in – 4.72±0.05% of cases, from one year to two years in – 10.73±1.01%, heifers and first-calf animals 2–3 years old in – 13.80±1.01%, cows older than 3 years in – 17.23±1.15%. With the year-round use of a stall keeping system with a passive exercise on walking grounds, the incidence of demodecosis in young animals under the age of one year is recorded at the level of 2.11–2.12%, in adult animals over the age of 3 years – 22.57–22.93%. With active exercise in animals aged one to three years, the incidence is recorded at the level of 8.93-18.05%. |