PARASITIC DISEASES OF DEER AND THE WILD HOOFED MAMMALS AT SOME HUNTING FARMS OF RUSSIA
The article describes helminthological experiments of the hoofed mammals on 6 maral farms and 1 hunting farm located in different regions of the Russian Federation, exactly in the Altai Territory and, Kaluga and Tver regions. The researchers investigated 773 samples of coprological material and highlighted the main pathogens of parasitic diseases: they are elaphostrongyls, intestinal strongylitis, eimerias, trichocephalans, scabies and nematodes. The researchers identified 12 types of pathogens. The authors observed highest rates of invasiveness caused by elaphostrongillosis, gastrointestinal strongylitis, trichocephalosis, and nematodeirozis in marals inhabiting in the Altai Territory. Their degree of invasion extensity was 100, 90, 87.5 and 25%, whereas invasion intensity was 9842, 147, 19 and 2 samples. The extensive invasion when experiencing eimeriosis reaches maximum parameters in mouflons at 100% when intensive invasion is 45 oocysts per gram of material. Scallop mites are widely spread in Tver region among the European deer population when extensive invasion is 85.7% and intensive invasion is 2 samples. The common causative agents of invasive diseases among the animals are gastrointestinal strongylitis, eumeria, elaphostrongyls, trichocephaly, scabies and nematodes. They are observed in three regions of Russia. The difference in the extensive and intensive rates of invasion depends on the geographical, climatic and anthropogenic factors that comprehensively influence their changes to a certain extent.