TY JOUR TI The use of probiotics in the cultivation of carp, tilapia and rainbow trout in Iraq KW probiotics KW aquaculture KW carp KW tilapia KW rainbow trout KW Iraq KW growth indicators KW feed efficiency KW water quality JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Rashid, L.. AU Turitsin, V.. PY 2026 IS 2026 PB Astrakhan State Technical University