Spread of Nematodes Parascaris Equorum (Goeze, 1782) in the Chechen Republic

One of the obstacles to horse breeding development is parasitic diseases. According to literary sources, one of the most common equine helminth infections in Russia is parascaridosis. Allergic and toxic manifestations, and decreased performance, endurance and natural resistance are observed in horses suffering from helminthic diseases. In the Chechen Republic, horse breeding is mainly commercial. The research purpose was to study the spread of nematodes Parascaris equorum in various natural and climatic zones of the Republic. The studies were conducted in 2022– 2023 covering flat terrain and mountainous zone. The studies of horse feces revealed nematodes of the suborder Ascaridata (Parascaris equorum) with the infection rate of 7.0 to 41.7%. The study objects were 368 horses of different age groups spontaneously infected with nematodes, of which 211 animals in the flat land, and 157 animals in the mountainous zone. Fecal samples were examined by the coprological method. Nematodes Ascaridata are poorly studied intestinal nematode species of horses in the Chechen Republic. We have found that the greatest infection rate in horses is in the flat land and the mountainous zone in autumn, and the least is in spring. The helminth infection intensity was 4–41% in horses in the flat land, which was significantly higher than horses in the mountainous zone (1–23%). The difference in the infection rate in horses in the mountainous zone and flat land is determined by landscape (including topographies) and climatic characteristics.