PURPOSE: To prepare a feed for cultivation having suppressed autodigestion and excellent digestibility, nutrient characteristics, feeding characteristics, etc., by finely pulverizing the meat, etc. of fish and shellfish in frozen state.

CONSTITUTION: The meat or guts of fish, shellfish, crustaceans, cattle, etc. are roughly crushed, and frozen at about -15W-20°C. The product is pulverized to a particle diameter of about ≤200μ with a high-speed disintegrator, etc. keeping the frozen state, and at the same time, kneaded to obtain the feed for cultivation. A feed having excellent emulsion state and balanced nutrient values can be obtained by carrying out the pulverization and kneading in the presence of grains and emulsifiers.