Solid feed for large-sized fishes

摘要

It is intended to provide a solid feed for large-sized fishes having the core-shell type structure which is composed of (i) a shell made of a sticky material containing nutritional components of the fish feed and (ii) a core comprising a composition containing nutritional components of the fish feed. Compared with the existing solid feeds for large-sized fishes, the solid feed as described above can be produced at a low cost, has an improvement in fishes' preference and enables the control of the retention and absorbability thereof in the intestinal tract.