Natural composition for improving anti-stress reaction of fish and application thereof

Abstract

The invention discloses a natural composition for improving anti-stress reaction of fish. The natural composition comprises a natural composite anti-stress agent I and / or a natural composite anti-stress agent II; the natural compound anti-stress agent I comprises two or more of a salvia miltiorrhiza organic solvent extract, a perilla leaf organic solvent extract and an angelica sinensis organic solvent extract; and the natural compound anti-stress agent II comprises two or more than two of a salvia miltiorrhiza water extract, a ginkgo leaf water extract and a mulberry leaf water extract. The natural composition provided by the invention is used for preparing anti-hypoxic and reoxygenation stress reaction additives or feed for fishes, and is a natural plant extract, and other substances arenot artificially added into basic feed raw materials. The natural functional feed can improve the anoxia endurance and the reoxygenation survival rate of fishes in culture, has no residue and no toxic or side effect, and does not pollute the environment.

Description

technical field [0001] The invention relates to the technical field of freshwater fish culture, in particular to a natural composition for improving the anti-stress response of fish and its application. Background technique [0002] The current status of aquaculture is mainly natural water aquaculture, and freshwater aquaculture is mainly pond aquaculture. The growth of farmed fish depends on the amount of dissolved oxygen in the water body. However, the disadvantage of natural aquaculture is that dissolved oxygen in water is greatly affected by environmental factors. The dissolved oxygen content in natural water bodies is affected by day and night, weather and seasonal changes. The photosynthesis of green plants in the water body is very active during the sunny day, when the dissolved oxygen content of the water body may reach a supersaturated state; at night, due to the stagnation of plant photosynthesis, the dissolved oxygen in the water body will be greatly reduced. W...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: high-density and natural water body culture causes fish to suffer from hypoxia and reoxygenation stress, and some existing feed additives have toxic side effects and even carcinogenic effects on animals, and may cause residues in fish meat. Cause food safety hazards and endanger human health, the invention provides a natural composition for improving fish anti-stress response and its application to solve the above problems

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