Feed additive capable of improving antioxidant ability of larimichthys crocea, and preparation method of feed additive

The invention provides a feed additive capable of improving antioxidant ability of larimichthys crocea. Resveratrol is added to a larimichthys crocea feed, wherein the addition quantity of the resveratrol is 0.05-0.15wt% of the total mass of the larimichthys crocea feed and the resveratrol. A preparation method of the feed additive comprises the following step of uniformly mixing and stirring theresveratrol with the larimichthys crocea feed. According to the feed additive disclosed by the embodiment of the invention, in a manner of adding a given amount of resveratrol to the larimichthys crocea feed, the purpose of improving the antioxidant ability of the larimichthys crocea can be realized; particularly, a functional feed additive capable of notably promoting the antioxidant ability of the larimichthys crocea is provided for a high-fat feed for raising the larimichthys crocea; and through adjusting the formula of the feed, harm to the larimichthys crocea, caused by the application ofthe high-fat feed, can be