Kelp is rich in amino acids, iodide, vitamins, minerals and active ingredients that stimulate animal growth. Moreover, the substances and most trace elements contained in kelp exist in organic state, which is easier to absorb than inorganic minerals.

Using kelp powder as feed additive can effectively improve the nutritional structure of feed, obviously promote the production performance of aquatic products, and also improve the quality of aquatic products, and can get good application effect in production practice.