TY JOUR TI APPLICATION OF BIOGENIC FEED ADDITIVE AKWA-BIOT-ACTIV IN INDUSTRIAL FISH GROWING TECHNOLOGY KW fish KW aquaculture KW Lena sturgeon KW carp KW feed additive KW biochemistry KW hematology KW safety KW morbidity KW veterinary and sanitary examination JO SCIENTIFIC NOTES KAZAN BAUMAN ACADEMY OF VETERINARY MEDICINE AU Semenov, V.G. AU Sofronov, V.G. AU Soloveva, E.N. AU Dvoretskaya, V.A. AU Dvoretskiy, G.O. PY 2026 IS 262 PB Kazan state agrarian University