Episootic situation on helminthiasis of horses in private farms of the Leningrad region

To study the spread of helminth infections and diagnosis of the helminth fauna in private horse breeding farms of the Leningrad Region, feces were survey studied from foals for a year, animals aged 1 year to 3 years, 3 years to 6 years old, 6 to 10 years old and over 10 years old. Gastrointestinal nematodoses were diagnosed using Darling's method with advanced flotation fluid, culturing larvae by the method of Petrov& Gagarin, and using microscopy of contents from perianal area. The dominance of gastrointestinal strongylides in horses of all age groups has been found. Yearlings are infested with trichonemas by 94.1%.Aling with age increasing, the intensity of invasion (II) is slightly reduced. In horses older than 10 years, the prevalence rate of trichonemic infection is 63.9%. Strongyloidosis was detected in 70.5% of foals up to a year old.At the age of one to 3 years, a slight decline in II is observed, but when reaching 3 years and further, with increasing age, II gradually increases. Horse s from 3 to 6 years of age (II = 80.0%) are more infected with parascarises. Yearlings are infested with parascarises by 56.2%, and in horses older than 10 years, II is 30.7%.Horses are less infested with oxyurises compared to other nematodes.The lowest levels of II by oxyurosis (23.5%) were found in yearlings, and most of all animals were invaded at the age of 6 to 10 years (II = 50.0%). It should be noted that helminth fauna is formed by nematodes, which are geohelminths in the terms of their developmental biology. Perhaps there is a correlation between the invasion of horses of all age groups and the characteristics of keeping animals in small private farms.

лошади, кишечные нематоды, частные хозяйства, Ленинградская область, horses, intestinal nematodes, private farms, Leningrad region

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