Формирование паразитофауны овец в условиях содержания на ограниченных пастбищных территориях предгорной зоны Армении

21 parasite species have been found in structure of variety of parasite species from hybrid sheep (mouflon × domestic sheep hybrids) contained within limited grazing territories of foothill zones of Armenia. These included 9 species of nema-todes, 4 of cestodes, 3 of trematodes, 3 of ixodid ticks and larvae of nasopharynge-al gadfly Oestrus ovis and sheep ked Melophagus ovinus. An analysis of paths of circulation of larvae of some biohelminthes, particularly Dicrocoelidae and Protostrongylidae, realized through invertebrate intermediate hosts (land snails) have shown that mean infection of the latter varied from 2,5 to 8,0 %.