ASSOCIATIVE TREMATODIASIS OF CATTLE IN NORTH-WESTERN AND SOUTHERN UZBEKISTAN

The purpose of this work is to study the spread and species composition of pathogens of trematode infections among cattle in North-Western and Southern Uzbekistan. The studies were carried out on the territory of the Republic of Karakalpakstan, Khorezm and Kashkadarya Regions in 2020–2023. Helminthological material was collected in all seasons of the year. In total, 364 heads of cattle were examined by complete and partial helminthological dissections. As a result of the studies carried out in the northwestern and southern regions of Uzbekistan, 9 trematode species belonging to 7 genera, 5 families and 4 orders of the class Trematoda were recorded. In the northwestern region, 175 heads of cattle (65.3%) out of 268 examined animals were infected with certain trematode species. Of those infected, 124 had associative invasions, and 51 had monoinvasions. In the southern regions, 41 animals (43.2%) out of 96 examined animals were infected with trematodes. Of the infected animals, 27 (65.8%) were infected with mixed trematode infections, and 14 (34.1%), with monoinvasions. Of 9 trematode species under consideration with natural and synanthropic focality, Schistosoma, Fasciola, and Dicrocelium were recorded.