| abstract |
(57) [Summary] [Problem] To cultivate fish in good condition, which cannot be achieved using conventional feed for cultured fish, by cultivating cultured fish healthy with an emphasis on initial defense and defense by enhancing body surface immunity. Provided is a feed for cultured fish that can be cultured and its additive. SOLUTION: The feed for cultured fish and the additive thereof contain 0.004% by weight to 0.4% by weight of polyphenols, such as proanthocyanidins, derived from bud nut seeds and skins, edible plants and unripe apples to be plucked. 04% by weight. |