SEASONAL EVALUATION OF TRYCHOSTRONGYLESIS DISTRIBUTION IN SHEEP IN KABARDINO-BALKARIA

Abstract

New data were obtained in the study of seasonal changes in the extensiveness and intensity of invasion of sheep trichostrongylosis in distant of pastures of the Kabardino-Balkaria Republic. The seasonal variability of the extensiveness and intensity of invasion of trichostrongylosis in the population of young sheep on mountain pastures of the region was determined by methods of helminthological autopsy according to K.I. Scryabin of the small intestine 35 heads. The epizootic process of trichostrongylosis in young sheep under 1 year of age is characterized by a two-peak climax of extensiveness and intensity of invasion. The first peak of the EI rise covers the end of spring (May) to the third decade of August, and the second peak covers the period from the end of summer to the second decade of November. Trichostrongylosis in young sheep under 1 year old in spring is found with EI – 17.4% and II – 54.8±6.3 copies / individual; in the summer season it is found of peak with EI – 36.2% and II – 123.0±11.4 copies / individual; in the autumn period – 58.6% and 185.9±16.7 individuals / individual; in the winter season – 58.6% and 27.3±2.5 copies / individual. In the small intestine of young sheep in all seasons of the year, except late autumn and winter, there were pathogens of trichostrongylosis in various stages of puberty. These data should be used to predict the epizootic situation on the trichostrongylosis of young sheep in the North Caucasus region, as well as when determining the optimal timing and frequency of deworming.