Growth and development dynamics of sturgeon hybrids under the influence of polymer systems with fluoroquinolone

Methods of controlling the diseases of aquatic organisms during their industrial cultivation have been studied. It is possible to suppress and destroy bacterial microflora in a targeted manner and to improve the performance of aquatic animals by using polymer systems with fluoroquinolone, which are characterized by bioavailability of substances. The purpose of the study was to investigate the effects of a polymer system with levofloxacin on growth, development and feed expenditure of RoLo hybrid reared in an aquarium setup. The article presents information on the possibility of using polymer systems with fluoroquinolone and their influence on the growth parameters of sturgeon fish. Five experimental groups of 10 RoLo individuals in each group were formed according to the pair-analogy principle. Weight growth, feed, protein and energy expenditure per 1 kg of weight gain were studied during the experiment. The effect of the polymer system with levofloxacin on hybrid individuals was studied in the conditions of the laboratory “Progressive Biotechnologies” of the Vavilov University. It was found that the body weight gain in the experimental groups of hybrid seedlings was higher compared to the control groups. Maximum growth was observed in the 3 rd experimental group, where fish received polymer system with 10 % levofloxacin. During the period of research, the minimum feed costs were observed in the 3 rd experimental group, which consumed feed with 10 % levofloxacin, the maximum was observed in the 2 nd control group, and since the growth in this group was not registered, the feed costs were for the maintenance of vital functions of the organism of hydrobionts. The results of the analysis show that the individuals of the 3 rd experimental group have better growth dynamics at minimum feed inputs. The results obtained expand the information on sturgeon fish farming under industrial conditions using polymer systems for delivery of fluoroquinolone antibiotic.