PROBLEM TO BE SOLVED: To provide a feed additive for fish and shellfish which is capable of obtaining fish and shellfish having strong disease resistance using jellyfishes and reducing the death rate of fish and shellfish, and to provide a method for cultivating fish and shellfish using the same.SOLUTION: The feed additive for fish and shellfish includes at least either a liquid (A) obtained by removing a residue of jellyfishes from a heated liquid obtained by heating a dispersion liquid in which the jellyfishes are dispersed, at a range of 80-150°C, or a residue (B) obtained by distilling a solvent from the liquid (A) obtained by removing the residue of jellyfishes. A feed for fish and shellfish is obtained by adding the additive to a feed. The fish and shellfish can be cultivated by feeding the feed for fish and shellfish to the fish and shellfish.COPYRIGHT: (C)2012,JPO&INPIT【課題】クラゲを利用して、病気に対する耐性が強い魚介類を得ることができ、魚介類の死亡率を低減させることのできる魚介類用飼料添加剤およびそれを用いた魚介類養殖方法を提供する。【解決手段】クラゲを分散させた分散液を80~150℃の範囲に加熱して得られた加熱液からクラゲ残渣を除去して得られる液(A)、および前記クラゲ残渣を除去して得られる液(A)から溶媒を留去して得られる残渣(B)の少なくとも一方を含むことを特徴とする、魚介類用飼料添加剤。前記添加剤を飼料に添加することにより魚介類用飼料が得られる。また前記魚介類用飼料を魚介類に給餌することにより魚介類の養殖が可能となる。【選択図】図1
