PALATABILITY IMPROVING AGENT FOR FISH, PHARMACEUTICAL COMPOSITION FOR FISH, AND MEDICINAL FEED FOR FISH

To provide a platability improving agent for fish facilitating oral ingestion of a pharmaceutical including bitterness, a pharmaceutical composition for fish, and a medicinal feed for fish.SOLUTION: A platability improving agent for fish includes a yeast extract and sodium chloride. The sodium chloride is preferably contained at a weight ratio of 0.1 or more and 2 or less with respect to the yeast extract. The yeast extract preferably contains 1.0 wt.% or more of disodium 5'-inosinate and 1.0 wt.% or more of disodium 5'-guanylate. A pharmaceutical composition for fish includes a pharmaceutical having bitterness and the platability improving agent for fish. The pharmaceutical preferably contains praziquantel or erythromycin. A medicinal feed for fish includes the pharmaceutical composition for fish and a fish feed.SELECTED DRAWING: None 【課題】苦味を有する薬剤の経口摂取を容易にする魚類用嗜好性改良剤、魚類用薬剤組成物および魚類用薬用飼料を提供する。【解決手段】魚類用嗜好性改良剤は酵母抽出物および塩化ナトリウムを含む。塩化ナトリウムを酵母抽出物に対し０．１以上２倍以下の重量比で含むことが好ましい。酵母抽出物は５'－イノシン酸二ナトリウムを１．０重量％以上、５'－グアニル酸二ナトリウムを１．０重量％以上含むことが好ましい。魚類用薬剤組成物は苦味を有する薬剤と、前述の魚類用嗜好性改良剤とを含む。薬剤はプラジクアンテルまたはエリスロマイシンを含むことが好ましい。魚類用薬用飼料は前述の魚類用薬剤組成物と魚類用飼料とを含む。【選択図】なし