Ecological analysis and characterization of epizootic family Protostrongylidae nematodes in sheep and goats in the North Caucasus
In all climatic zones of the region of the North Caucasus in sheep and goats pulmonary nematodes family Protostrongylidae (Protostrongylus hobmaieri, Protostrongylus kochi, Protostrongylus raillieti, Protostrongylus skrjabini) recorded with different quantitative values of extensiveness (EI) and the intensity of infection (II). EI Criteria sheep varied between 14,2-22,6% (average 18,4%). The number of larvae of 4 species protostrongylids per 1 g of feces in the amount of fluctuation was 7,5±0,6-12,3±0,9 ekz. In the foothills of the highest exensinvazirovannost it was registered (as a result of lung PGV) (22,6%) at a total detected nematodes family Protostrongylidae, on average, 12,3 ekz./ind. Mixed invasion Protostrongylus hobmaieri, Protostrongylus kochi, Protostrongylus raillieti, Protostrongylus skrjabini in populations of goats in the foothills of the extent of infestation occurs with 9,73% at detection in 1g. faeces, on average, 10,2 ekz. larvae. When PGV goats protostrongilesis meets ee=16,2% for the II - 8,6 ekz./ind. In the mountainous area of extent of infestation was 7,3% in the presence of 1 g of feces in the average, 4,8 ekz. larvae. The ecological features of the region affect the quantitative extensinvazirovannosti goat nematodes Protostrongylus hobmaieri, Protostrongylus kochi, Protostrongylus raillieti, Protostrongylus skrjabini. Increasing the extensiveness of infection caused by species Protostrongylus hobmaieri, Protostrongylus kochi, Protostrongylus raillieti, Protostrongylus skrjabini summer and fall caused by nematodes reaching a new maturity. In summer, EI has increased to 17,2%, was 22,6% in the autumn.