TY JOUR TI STUDY OF MICROBIOLOGICAL COMPLEX USE IN GROWING STERBEL FRY KW sterbel KW microbiological complex KW probiotic effect KW fish farming and biological parameters KW feed costs per 1 kg of live weight gain KW intestinal microflora composition KW biochemical parameters of blood serum KW economic efficiency JO Bulletin of KSAU AU Maxim, E.A. AU Yurin, D.. AU Ologina, E.Y. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University