The spread of bioecology and types of development of trematodes parasitizing among sheep of Uzbekistan
Currently, trematodes Fasciola hepatica, Fasciola gigantica, Dicrocoelium dendriticum, Gastrothylax crumenifer, Calicophoron calicophorum, Liorchis scotiae are spread common sheep of Uzbekistan. F gigantica is distributed throughout the irrigated and partly piedmont biocenoses and has paramount importance in the pathology of fascio-liasis. F hepatica is absent only in the northwestern part of Uzbekistan. Transitional hosts of F gigantica are freshwater mollusks Lumnaea auricularia, L. bactriana, L. subdisjuncta, L. impura, and for F hepatica - L. truncatula. Both types of fasciol develop on fasciolide class. D. dendriticum, as well as F hepatica, is absent only in the northwestern part of Uzbekistan. This trematode develops to the dicrocelial type, parasite successfully overwinter in the organism of transitional hosts, infection of animals with fascioli is observed all year round, and dicrocelial from early spring to autumn months. Paramphistomatoses - gastrotiliaxosis, calicoforosis, sheep liorhosis of sheep were first detected in 2012 in Samarkand and Tashkent regions. They have focal character and are accompanied by death and forced slaughter of sheep. The extent of sheep damage varies from 33 to 100 percent, and the invasion intensity is from 592 to 4 thousand specimens. paramphistomat. Paramphistomatomas also develop according to the fasciolid class