Starodub Y. Trychostrongylus infection in goose (distribution, diagnostics and prevention methods)

The dissertation presents the theoretical generalizations and experimental solutions of the scientific problem of distribution, diagnostics and methods of prevention of Trychostrongylus infection in goose under the conditions of farms of the Poltava region of Ukraine. The average prevalence of trichostrongyliasis was 22.94 %, according to the results of the coproovoscopic analysis. The species composition of associated pathogens in mixed infections of goose was established. According to the results of coprooscopic studies, trichostrongylosis occurred in 78.89 % of infested goose in mixed infections of the digestive tract, mostly in the form of two-component combinations of parasites (49.15 % of the total number of patients with mixed invasion of goose). Peculiarities of age and seasonal dynamics of trichostrongyliasis of goose were determined. We examined the differential species characters of females and eggs of Trichostrongylus tenuis nematodes (Nematoda, Trichostrongylidae), which parasitize domestic goose. The method of lifetime coprooscopic diagnosis of trichostrongyliasis of goose is proposed, its diagnostic efficiency is tested and experimentally substantiated. The improved method is based on the fact that a combined solution of sugar and calcium nitrate in a ratio of 1: 1 (specific gravity 1.30–1.33) is used as a flotation liquid, and sedimentation of samples is carried out for 9–11 minutes. According to the results of experimental studies, the anthelmintic drugs levamisole-80 and univerm were highly effective, causing 100 % extensive efficiency and intensive efficiency on the 3rd day of the experiment. Similarly, brovadazole plus showed 100 % extensive efficiency on the 14th day of the experiment. For the first time in Ukraine, the disinfecting activity of modern disinfectants produced in Ukraine “Virosan” (LLC “BioTestLab”), “Dezsan” (LLC “Brovapharma”) and “Hermecid-VS” (LLC “Vetsintez”) was determined against test cultures of T. tenuis eggs and infectious larvae.