Кафедра нормальної і патологічної анатомії та фізіології тварин

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https://dspace.pdau.edu.ua/handle/123456789/5083

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Перегляд Кафедра нормальної і патологічної анатомії та фізіології тварин за Автор "Melnychuk, V. V."

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  • Ескіз
    Публікація
    Description of feather mite Proctophyllodes musicus(Acariformes, Proctophyllodidae) obtained from Turdus merula
    (2024) Мельничук, Віталій Васильович; Melnychuk, V. V.; Євстаф’єва, Валентина Олександрівна; Yevstafieva, V. O.; Коломак, Ігор Олегович; Kolomak, I. O.; Філоненко, Сергій Васильович; Filonenko, S. V.; Опара, Надія Миколаївна; Opara, N. M.; Muzyka, D.; Chaplygina, A.
    Feather mites (Acariformes, Astigmata) are a large group of species in which mites of the genus Proctophyllodes Robin, 1868. Analgoidea are among the most common parasites of passerines. These mites are permanent obligate ectoparasites localized on the flight feathers, greater wing coverts, and on the tail. Most species of feather mites are characterized by high host specificity. The taxonomy and fauna of feather mites of the genus Proctophyllodes, and their morphological identification characters in different countries of the world are still a matter of research. The aim of our work was to describe the morphological features and metric parameters of feather mites of the species P. musicus Vitzthum, 1922, isolated from the common blackbird Turdus merula Linnaeus, 1758 in Ukraine. 32 parameters are determined in males and females of P.musicus mites, which characterize both their general structure of the body and sexual dimorphism. The structure and sizes of the body, gnathosoma, idiosoma, prodorsal and hysteronotal shields, epimerites I, setae cp and c3, and the distance between setae of the scapula se–se and si–si are described. In males, the sizes of adanal sucker discs, epigastric shields, genital arch, setae ps2, h3, h2, the distance between setae 4a–4a, g–g, ps3–ps3, ps1–ps1 are additionally described and determined. Lamellae in males are wide, tongueshaped, do not overlap. The aedeagus is short, slightly extending beyond the posterior margin of the genital arch. In female mites, the dimensions of the lobar shield, terminal appendages, and terminal recess are additionally described and determined, taking into account the location of setae ps1, h2, the dimensions of setae cp, c3, h3, h2, the distance between setae h1–h1, the distance between hysteronotal and lobar shields. The mite eggs were measured in the body of the female and on the feathers of the birds. The scientific data obtained in this study expand the already existing data on morphological and metric characters of feather mites of the species P. musicus(Proctophyllodidae) isolated from the common blackbird
  • Ескіз
    Публікація
    Inhibitory properties of disinfectants on the sporogony of Eimeria tenella (Protista, Eimeriidae)
    (2025) Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Melnychuk, V. V.; Мельничук, Віталій Васильович; Hodyna, V.; Mykhailiutenko, S. M.; Михайлютенко, Світлана Миколаївна; Kruchynenko, O. V.; Кручиненко, Олег Вікторович; Omelchenko, A.; Avramenko, N. О.; Авраменко, Наталія Олексіївна; Mazannyi, O.
    he protozoa of kingdom Protista are widespread pathogens of gastrointestinal protozoal diseases in chickens and cause significant economic losses to farms. Prevention includes a set of measures to treat poultry with effective drugs, and disinfect the environmental objects using modern, safe and beneficial means. For this purpose, it is recommended to use disinfectants that have been tested for their disinfestation effect. The aim of the research was to investigate the disinfestation effect of chemicals on the process of sporulation of Eimeria tenella oocysts isolated from chickens in laboratory conditions. It was found that the disinfectants "Virosan" (active substances – alkyldimethylbenzylammonium chloride and glutaraldehyde) and "Yoderin" (contains iodophores) had disinvasive properties, but their indicators of inhibitory action against sporogony of E. tenella oocysts were not the same. The most effective was the agent alkyldimethylbenzylammonium chloride and glutaraldehyde mixture, with a 100% inhibitory effect when used at a 0.5% concentration and exposure of 150 minutes. At lower exposures and concentrations, its indicators of inhibitory action ranged within the following limits: at 0.1% concentration to 57.0%, at 0.25% concentration to 84.5%. The inhibitory effect of the iodophor-based disinfectant was lower and varied depending on the exposure (from 30 to 150 min) within the following limits: at 0.5% concentration to 35.7%, at 1.0% concentration to 68.2%, at 2.0% concentration to 93.1%. In addition to stopping the development of Eimeria oocysts, the disinfectants induced changes in their morphological and metric indicators. Metric indicators of oocysts under the action of disinfectants were characterized by lower values of their width (by 4.8–8.7%), and under the action of the iodophor-based agent, by a decrease in the ratio of length / width of oocysts (by 11.0%). The obtained results of the inhibitory action of the disinfectants present prove the possibility of using these agents to combat and prevent eimeriasis in chickens