TY JOUR TI The possibility of using gaprin (protein of microbiological synthesis) as a protein source in compound feeds for rainbow trout (Oncorhynchus mykiss) KW aquaculture KW gaprin KW protein of microbiological synthesis KW protein of microbial origin KW cage cultivation KW hematology JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Kuchihin, Y.. AU Breyev, I.. AU Bahareva, A.. AU Kochetkov, N.. AU Smorodinskaya, S.. AU Beliaeva, M.. AU Zaitsev, V.. PY 2025 IS 2025 PB Astrakhan State Technical University