BIOLOGICALLY ACTIVE ADDITIVES IN PRODUCTIVE STURGEON DIETS
While transferring fish breeding to the industrial basis the problems connected with technogenic impact of new biotechnologies on grown-up fishes become obvious. It assumes the deep studying not only piscicultural and biological, but physiological condition of cultivated fishes. Studying of exchange processes during cultivation allows not only to make in due time decision on correction of separate stages of fish-breeding technology, but in proper time to correct their physiological condition, applying various probiotic and vitamin and mineral additives. Researches have been executed in 2013 in the laboratory of water bioresources and aquaculture on the basis of the experimental aquacomplex "Kagalnik" of the Southern Scientific Center of the Russian Academy of Sciences in the conditions of the recircular system. Fingerlings of a hybrid sterlet × beluga ( Acipenser ruthenus × Acipenser huso Linnaeus) were used as objects of the researches. When feeding probiotic Batsell, as well as the vitamin and mineral E-selenium complex were added as biological products. Fishes were fed with the dry granulated feed of Efico Sigma 840 N 3–4 (BioMar). The results of the conducted researches confirmed that the use of low concentration of E-selenium when feeding fishes practically don''t increase in mass characteristics. Application of preventive doses, first of all, is directed on stabilization of peroxide processes and correspondingly on physiological condition of an animal deformed by technological conditions of cultivation.