Feed additive capable of improving quality of marine culture fish and preparation method thereof

Abstract

The invention provides a feed additive capable of improving the quality of marine culture fish and a preparation method thereof, and belongs to the technical field of marine culture. The feed additivecomprises an organic chromium complex which contains at least two kinds of amino acid ligands, wherein the at least two kinds of amino acids are selected from methionine, cysteine, alanine, glycine,proline, glutamic acid or histidine. The preparation method comprises the following steps: preparing the organic chromium complex by a microwave heating solid phase synthesis method, and mixing the organic chromium complex with a chitosan oligosaccharide complex to obtain the feed additive, wherein sodium citrate and D-alanine are added in the microwave heating solid phase synthesis reaction. Thefeed additive provided by the invention can participate in carbohydrate metabolism in bodies, improve the immune function and anti-stress ability of animals, and improve the flavor and muscle qualityof fish to be more approximate to wild fish; and the preparation method has low energy consumption and high yield, and the prepared organic chromium complex has moderate stability.

Description

technical field [0001] The invention belongs to the technical field of mariculture, and in particular relates to a feed additive for improving the quality of mariculture fish and a preparation method thereof. Background technique [0002] Fish plays an important role in nutrition, it is rich in different vitamins (D, A and B) and minerals (including calcium, iodine, zinc, iron and selenium), fish is easy to digest high quality rich in all essential amino acids The source of protein, providing human beings with rich animal nutrition protein. At present, mariculture has increased the output of aquatic products, contributed to economic growth, and relieved the fishing pressure on natural fishery resources to a certain extent. Since the 1990s, the production of marine fish and shellfish in my country has increased substantially, and the development of the mariculture industry has made remarkable achievements, which has greatly enhanced the status of marine fisheries in the nati...

AI Technical Summary

Problems solved by technology

However, feeding a large amount of high-protein and high-energy bait makes the fish passively change their feeding habits, and their body functions cannot adapt to the change of their feeding habits for a while. If they eat more bait than their nutritional needs for a long time, the nutrition cannot be completely transformed, and the body fat will accumulate too much. Too much, leading to symptoms of malnutrition metabolism in fish, resulting in the decline of immunity and disease resistance of grass carp, and there are also problems such as decline in fish meat quality and poor taste

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