DISTRIBUTION OF THE MAIN STRONGYLATA INFECTIONS OF HORSES IN THE PROVINCES OF THE ALTAI REPUBLIC

Abstract

The research purpose was to study the distribution of the main Strongylata infections of horses in the provinces of the Altai Republic. Infective larvae of strongylates after their cultivation were isolated by the Berman-Orlov method and subsequently identified taking into account morphometric characteristics. The ubiquitous distribution of helminths of the suborder Strongylata with heterogeneity of infection in ungulates was detected in the context of administrative districts and provinces. In the provinces as a whole and in administrative districts, species of the family Trichonematidae predominate, and their infection rate in horses significantly exceeds the infection with other strongylates (IP, 64–99%). The infection rate of nematodes of the family Strongylidae, including Strongylus, Alfortia and Delafondia is 2–4 times smaller and is 31.9, 20.4 and 10.6%, respectively. On the farms of the Southeastern Altai (Kosh-Agachsky District), the invasion of ungulates with strongylates in general including Trichonema, Alfortia and Delafondia is 2-10 times lower than in other districts of the Republic and amounts to 59.6, 51.6, 4.8 and 3.2%, respectively. The sharp difference in the infection of animals in this region in our opinion is mainly associated with the topographic and landscape features of the area and is due to the low heat supply and aridity of the climate in most of the territory.