Probiotic feed additive for improving immunity of aquatic animals

Abstract

The invention discloses a probiotic feed additive for improving the immunity of aquatic animals. The formation of the raw materials is as follows in parts by mass: 20-30 parts of probiotic fermented bacterium powder, 30-50 parts of oyster powder, 5-10 parts of cyclodextrin, 2-5 parts of vitamins, 1-2 parts of brown algae polysaccharide, and 0-10 parts of compound enzyme preparation. According to the present invention, aerobic and anaerobic mixed bacterium synergistic fermentation technology is adopted to co-ferment for preparing probiotic fermented feed additives, the immunity enhancement effect of the feed additive is significantly improved through the synergy between fermentation products and microorganisms, and the immunity effect has an important role in inhibiting the infection and growth of pathogenic microorganisms, restoring the balance of intestinal flora, and enhancing the intestinal immune function and physiological function. Experimental results show that the immunity of aquaculture animals such as Penaeus vannamei, can be significantly improved by the product, animal growth performance is improved, the feed coefficient is reduced, the breeding risk is reduced, and thebreeding economic benefit is increased.

Description

technical field [0001] The invention relates to a probiotic feed additive for improving the immunity of aquatic animals, in particular to a probiotic feed additive which can significantly improve the immunity of aquatic animals such as Penaeus vannamei and belongs to the technical field of feed additives. Background technique [0002] In order to meet the ever-increasing demand for aquatic products, solving physiological dysfunction and frequent diseases caused by the continuous expansion of aquaculture scale and shortened growth cycle has become the key problem of aquaculture and the key to the development of the aquafeed industry. In this context, antibiotic feed additives are popular and widely used in the feed industry, which has promoted the development of aquaculture industry to a certain extent, but the problems of high residue, high pollution and drug resistance caused by antibiotics are becoming more and more serious. serious. At present, environmentally friendly f...

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Problems solved by technology

In recent years, people have begun to try to use beneficial microorganisms to adjust water quality in aquaculture production, but on the whole, the current probiotic feed additives for aquaculture are still dominated by direct addition of microbial agents. For example, patent CN201810145012.1 discloses a probiotic for aquaculture The preparation method of the feed uses agricultural product processing scraps and / or seafood processing scraps as raw materials, undergoes primary fermentation and ripening and removes miscellaneous bacteria, and then uses biological fermentation technology to carry out secondary fermentation to obtain probiotics rich in three different habits. Bacillus coagulans feed additive for aquaculture containing germination agent; patent CN201811363435.7 discloses a Bacillus coagulans feed additive for aquaculture containing a germination agent and a preparation method thereof; the composition of the Bacillus coagulans feed additive for aquaculture containing a germination agent is as follows: Bacillus coagulans powder, glucose, trehalose, dry powder of corn steep liquor; the content of spores in the said Bacillus coagulans powder is not less than 10 billion CFU / g, which solves the problem of slow germination and low germination rate of Bacillus coagulans feed additives. Poor product effect after application

Although the above-mentioned probiotic feed additives have achieved remarkable technical effects, there are still large technical bottlenecks in improving the comprehensive immunity of aquaculture animals and further exerting the nutritional effect of probiotics, and it is difficult to meet the requirements of modern high-density intensive aquaculture. needs

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