Feed additive for improving immunity and antioxidation ability of river crabs and preparation method thereof

Abstract

The invention relates to the technical field of aquaculture, especially to a feed additive for improving the immunity and antioxidation ability of river crabs. The feed additive includes the following components: 40-80 parts of tea polysaccharide, 20-40 parts of thearubigin, 15-35 parts of theanine, 10-15 parts of lycopene, and 7-10 parts of immunopolysaccharide. The feed additive provided by the invention has low-cost and easily available raw materials, is completely in accord with the requirement of farmers for low-cost feed, and can be put into use heavily. Moreover, the feed additive prepared by the method provided by the invention can improve the immunity and antioxidation ability of river crabs. At the same time, the additive also plays an antioxidant role in feed, avoids oxidative deterioration of fat, multi-vitamins and the like in feed, and greatly improves the survival rate of bred river crabs.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a feed additive for improving the immunity and anti-oxidation ability of river crabs and a preparation method thereof. Background technique [0002] The river crab aquaculture industry has developed rapidly in recent years, and the output has been continuously improved. However, in some areas, the density of crab species is too high, too much use of fresh fish, improper planting of aquatic plants, or excessive use of drugs have also caused problems such as water pollution and decline in crab health, causing losses to the aquaculture industry. It is very necessary to improve the immunity of river crabs and promote the healthy breeding of river crabs. Studies have proved that nutrition and immunity are closely related. Improving the immunity of river crabs and improving the antioxidant capacity of river crabs through nutritional regulation can not only overcome the problems of...

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Problems solved by technology

[0004] For example, the patent document with publication number CN103652475A discloses a grass carp feed, although the feed can improve the immunity of river crabs to a certain extent, it cannot achieve the effect of improving the survival rate.

[0005] Another example is that the patent document with the publication number CN103844042A discloses a feed additive that can enhance the immunity of abalone, but the cost of raw materials is too high and difficult to obtain, which does not meet the requirements of low-cost feed for farmers and cannot be put into use in large quantities.

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