Feed additive for promoting acute stress recovery of freshwater fish and application of feed additive

Abstract

The invention discloses a feed additive for promoting the acute stress recovery of freshwater fish and application of the feed additive. The feed additive is characterized by comprising linseed oil, vitamin E and vitamin C which serve as effective components and consisting of the following raw materials in parts by weight: 35-45 parts of linseed oil, 0.04-0.06 part of vitamin E acetate, 0.10-0.20 part of L-ascorbic-acid-2-phosphate, 15-25 parts of glucose, 10-20 parts of glycine betaine, 5-15 parts of sodium chloride, 3-6 parts of algal polysaccharides, 3-5 parts of methionine, 3-5 parts of lysine and 0.01-0.02 part of ethoxy guin. The feed additive can be added into a feed according to the dosage of 5-10 percent. The feed additive has the advantages that under environmental stress, the survival rate of fish is improved by 20-30 percent after the fish is fed with the feed with the additive disclosed by the invention, the weight gain ratio is improved by 40-45 percent, and gill, liver and alimentary canal tissue structures, the blood condition, the anti-oxidization property, the immune response performance and the disease resistance can be recovered to a normal level.

Description

technical field [0001] The invention relates to a feed additive for aquatic products, in particular to a feed additive for promoting the recovery of freshwater aquaculture fish after acute stress. Background technique [0002] Environmental stress is considered to be one of the main factors affecting the health of aquaculture animals. With the development of high-density intensive culture system in aquaculture, high temperature, high ammonia nitrogen and high nitrite stress often occur, which restricts the development of aquaculture. The occurrence of stress is closely related to factors such as the temperature of the breeding environment, the degree of spoilage of residual bait, and the excretion of endogenous nitrogen in fish. Especially in high-density breeding systems, it is easy to cause continuous stress, and even a short-term sudden increase in concentration. Usually, cooling, biological filters or circulating water systems are used to control, but the rapid accumula...

AI Technical Summary

Problems solved by technology

Linolenic acid (C18: 3n3) is a polyunsaturated fatty acid, a component of cell membranes, a precursor of eicosanoids in aquatic animals, an important inducer of immune responses, and an essential fatty acid to ensure the normal growth of freshwater fish (except tilapia), but the occurrence of linolenic acid peroxidation will not only cause the body's linolenic acid content to decrease and essential fatty acid deficiency, but also accumulate a large amount of aldehyde and ketone cytotoxic substances due to peroxidation. The main mechanism of toxicity is Manifested as growth inhibition, gill and liver tissue lesions, hyperexcitability, coma, convulsions, and eventually death

At present, there are no published research reports on feed additives and their applications for promoting the recovery of freshwater cultured fish after acute stress at home and abroad

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