Abstract: The performance of a developed floating fish feed extruder was evaluated. The effect of some parameters such as; screw speeds (100 rpm, 150 rpm, and 200 rpm), moisture content of ration (20 %, 25 %, 30 % and 35 %), and die diameters (3 mm, 5 mm, 9 mm) on specific mechanical energy requirements, expansion ratio, bulk density and
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