Biological additives, biocоrrectors, mycotoxin eliminators favorably affect the quality and safety of the products obtained, as evidenced by a large number of studies, and also affect the immune status, therefore, the purpose of our study was to conduct an organoleptic evaluation of rainbow trout samples and find out whether the use of a humic acid-based drug affects such organoleptic parameters like appearance, color, consistency and smell. Feed additives have a beneficial effect on the quality and safety of the products obtained and affect the immune status. The purpose of our study was to determine the effect of the use of the drug "SmartBiotic", produced on the basis of humic acids, on the organoleptic characteristics of the products obtained.Three groups of rainbow trout fingerlings (Oncorhynchus mykiss) were formed to conduct the study. One group served as a control, and the other two were experimental. The first experimental group of fingerlings received the drug at a concentration of 0.15%, and the second experimental group – at a dose of 0.25%. In the control group of rainbow trout, the drug "SmartBiotic" was not used. The determination of organoleptic parameters of rainbow trout (Oncorhynchus mykiss) samples was carried out on the basis of the laboratory of the Department of Veterinary and Sanitary Examination of the St. Petersburg State University of Veterinary Medicine according to generally accepted methods and in accordance with the requirements of RNS 814-2019 "Chilled fish. Technical conditions", with the help of which it is also possible to identify the increasingly common falsification of products.To conduct the study, samples were selected from the formed three groups of rainbow trout fingerlings (Oncorhynchus mykiss) for organoleptic analysis.
