Влияние пробиотика, иммобилизованного на энтеросорбенте, на интенсивность роста и физиологические показатели красной тиляпии (Oreochromis mossambicus × Oreochromis niloticus)

Abstract

The article considers a method to obtain environmentally friendly aquaculture products (red tilapia (Oreochromis mossambicus × Oreochromis niloticus) by adding the probiotic preparation Ecoflor to the balanced mixed feed. The probiotic component of the preparation formed by several strains of bifid and lacto bacteria gives the prepa-ration ability to improve the intestinal microflora of fish, activate the immune system, remove unfavorable microflora formed by metabolic products, heavy metals, radionuclides, toxins and metabolites, increase the rate of formation and accumulation of biomass of beneficial microflora in the digestive tract of fish. In the Aquaculture Technical Center under Astrakhan State Technical University there were grown 4 groups of red tilapia, 15 species in each group. Three experimental groups were fed with compound feed with the addition of probiotic Ecoflor by 2, 4 and 6 g/kg. The results were compared between the experimental groups, as well as with the control. It has been proved that feeding red tilapia with balanced mixed fodders with the addition of the immobilized probiotic preparation “Ecoflor” at a dose of 4 g/kg of feed helps to activate the protective functions of the body, normalize the metabolic processes, optimize digestive processes. The absolute increase in the group that received food with a probiotic at a dose of 4 g/kg of feed was 7.7 more than in the control. It significantly exceeded the increase in other experimental groups, which allows reducing feed costs to 1.1 units. The use of the developed compound feed in the cultivation of red tilapia makes it possible to obtain eco-friendly fish bio-products even if the waters used for fish breeding are polluted.