Species Composition and Distribution of Helminths in Cattle in the Landscapes of Uzbekistan

Abstract

The article highlights the fauna and landscape-geographical features of helminths of cattle in the conditions of Uzbekistan. Based on many years of our own research and analysis of literature data, 71 species of helminths were identified in cattle of Uzbekistan, of which 12 species belong to the class - Cestoda, 12 - to the class of Trematoda and 47 species to the class - Nematoda. Of the 71 species of helminths identified in cattle of the Republic, 1 species (Stephanofilaria assamensis) was noted by us for the first time in the CIS and 11 species (Moniezia alba, Trichocephalus globulosa, Bunostomum trigonocephalum, Camelostrongylus mentulatus, Cooperia punctate, C. pectinata, Grosspiculagia occidentalis, Nematodirus abnormalis, N. spathiger, Stephanofilaria assamensis, Thelazia skrjabini) in Uzbekistan.

Among the identified parasitic worms of cattle in Uzbekistan, 36 species develop in a direct way, i.e. they develop without the participation of intermediate hosts. The remaining 35 species of helminths develop with the participation of intermediate and additional hosts. Their intermediate and additional hosts are freshwater and land mollusks, grasshoppers, ants, diptera, oribatid mites, predatory mammals, and humans. Also, it was determined that of the 71 species of helminths Paramphistomum ichikawai, Taeniarhynchus saginatus, Trichocephalus globulosa, Aonchotheca bovis, Thelazia rhodesi, Th. gulosa, Th. skrjabini, Th. petrovi, Onchocerca lienalis, Stephanofilaria stilesi and S. assamensis parasitize only cattle.

Under the conditions of Uzbekistan, the total infection of cattle with helminths is 94.3%. At the same time, in some regions of Uzbekistan, infection of cattle with trematodes ranges from -34.0 to 66.6%, cestodes from 17.6 to 45.1% and nematodes from 70.0 to 93.5.

The widespread helminthiases of cattle that adversely affect their productivity are monieziosis, larval teniidosis, fascioliasis, paramphistomidiasis, trichuriasis, haemonchosis, parabronemosis, thelaziosis, stephanofilariasis and other helminthiases..