Environmental assessment of the use of biologically active substances of forage plants in fish farming

Petrozavodsk State University, 185910, Petrozavodsk, Russia

^* Corresponding author: tche4kova.natalia@yandex.ru

Abstract

This article focuses on the environmental assessment of the use of biologically active substances (BAS) of forage plants in fish farming. The main attention is given to the study of the degree of microbial contamination of plant components included in the feed. The objective of the study was to identify the spectrum of contamination of grower feeds for rainbow trout with micromycetes. Due to an environmental assessment of feed samples containing forage plants (soy bean, rapeseed, wheat) or their components (soybean flour, sunflower meal), representatives of three genera of micromycetes, such as Aspergillus, Fusarium, and Rhizopus, belonging to the kingdom of Fungi, divisions Ascomycota and Zygomycota; subclasses Eurotiomycetidae, Sordariomycetidae, and Mucorineae; orders Eurotiales, Hypocreales, Mucorales, and families Trichocomaceae, Nectriaceae, and Rhizopodaceae, were found. The detrimental effect of myxomycetes on the bodies of fish has been detected.