Spreading of cestodes Thysaniezia giardi (Moniez, 1879) in sheep in territories of Nakhchivan Autonomous Republic

In the article was considered the especially of tyisaniesioses spreading in sheep kept in the flat territories of Nakhchivan Autonomous Republic. Studying the dynamics of tyisaniesioses in the mentioned territories, it is established that sheep are infected with helminths almost during the whole pasture season. Tyisaniesioses are intestinal helminthic diseases that cause huge economic damage to farm animals; the productivity of adult animals is reduced, there is a significant waste of young animals. In 2022-2024, the distribution of Thysaniezia giardi species was studied in Sharur, Julfa, Shahbuz and Ordubad districts using carpological and helminthological autopsy methods of sheep small intestine. The highest infection with thysaniesioses is observed in sheep older than 1-2 years. Lambs in the first 5 months of life are not infected with thyzanesiosiases. Infection with thyzanesiosiases. of animals kept in farms of four districts was rather high (average infection rate 36.35%). During the research it was found that the highest number of helminth-infested farms was found in Julfa district (55.9%) and Sharur district (42.2%), which are located in lowlands. In Ordubad district, whose farms are located in the foothills, the degree of infestation was 28.1%, and in Shahbuz district, which is a mountainous area, 19.2%.