Epizootic situation with infectious and invasive diseases in fishery of LLC “Nikolaev RMS”


  • V. V. Senechyn Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Lviv, Ukraine https://orcid.org/0000-0001-6347-296X
  • R. S. Oseredchuk Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Lviv, Ukraine https://orcid.org/0000-0002-1738-9791
  • E. O. Yakimova Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Lviv, Ukraine
Keywords: fish, pathogen, cestodes, invasive diseases, hydrobiological and hydrochemical studies, intensification measures.

Abstract

Most fish farms in their economic activities for the reproduction and cultivation of fish rely on the use of a set of intensification measures, but, despite them, the spread of infectious and invasive diseases and the deterioration of the epizootic condition does not stop. Fish farms are most exposed to pathogenic effects, as they specialize in raising young fish, which is more susceptible to this type of disease. During the growing season, we conducted hydrobiological and hydrochemical studies, analyzed the epizootic state of the farm, and identified the intensity of the spread of invasive fish diseases in summer and autumn. Because invasive diseases complicate the process of reproduction and rearing of fish, which primarily leads to refusal of food, reducing the intensity of its growth, the death of a large number of aquatic organisms, which causes significant economic losses in the production process. The main purpose of the work was: identifying pathogens of infectious and parasitic diseases to identify them; establishing the intensity of infection; selection of methods of fish treatment and disease prevention in the carp farm of Mykolayivska RMS LLC and Babin-Ryba fish farm. Studies have shown that a significant proportion of fish was affected by pathogens of the class Sestoidea (cestodes): Khawia sinensis (caviosis), Caryophyllosis (karyophilosis) in all age groups, Dyplostomums pathaceum (diplostomosis), Trichodina domerguei forma acdose and three others. (ligulosis), Lernaeosis (Lerniosis), Bothriocephalus acheloignati (botryocephalus). To control the incidence of fish used cestozol, which contains 70 % niclosamide and 30 % levamisole, which helped to overcome the source of infection and curb the incidence. To prevent the occurrence of such phenomena in the future economy, it is recommended to strictly follow the veterinary and sanitary rules and regulations provided by the technological processes of reproduction and cultivation of fish.

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Published
2021-11-27
How to Cite
Senechyn, V., Oseredchuk, R., & Yakimova, E. (2021). Epizootic situation with infectious and invasive diseases in fishery of LLC “Nikolaev RMS”. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 23(103), 152-156. https://doi.org/10.32718/nvlvet10321