ECOLOGY OF NEMATODES OF THE FAMILY TRICHOSTRONGYLIDAE LEIPER, 1908
Annotatsiya
The purpose of these studies is to study the change in seasonal dynamics in nematodes of the family Trichostrongylidae Leiper, 1908 found in ruminants of Uzbekistan. The material was collected from small cattle in slaughterhouses in the Tashkent, Syrdarya, Andijan, Fergana, Kashkadarya, Surkhandarya, Navoi, Bukhara and Samarkand regions. Our studies showed that nematodes of the family Trichostrongylidae varied significantly in frequency of occurrence in small cattle in different regions and seasons of the year. The highest trichostrongyle infection in animals was observed in the Bukhara region (39.7%) and the lowest in the Andijan region (13.7%). The most favorable time for the development and reproduction of trichostrongyles is in spring and autumn when the trichostrongyle infection rate in ruminants averaged 8.3–55.3%, and the intensity of infection was 1–121 specimens. In the desert zone, the average annual prevalence in domestic ruminants is 43.5%, the intensity of infection is 1–279, in the adyr belts the average annual prevalence is 34.6% and the intensity of infection is 3–131 specimens, in the foothills the average annual prevalence is 34% and the intensity of infection is 2–193 specimens, in mountainous areas the average annual prevalence is 31.4% and the intensity of infection is 1–279 specimens.