Feed additive with prawn liver protection function and preparation method thereof

Abstract

The invention discloses a feed additive with a prawn liver protection function, in particular to a bacteria-containing feed additive prepared by culturing and fermenting bacillus subtilis, bacillus licheniformis, lactobacillus plantarum and lactobacillus casei so as to regulate internal environments in prawns and the whole water environment to alleviate hepatopancreas damage and pathological change in the prawns culture. The invention further discloses a method for preparing the feed additive. The feed additive is safe, pollution-free, residue-free, green and environment-friendly, and can be used for effectively improving the immunity and the virus resistance of the prawns, promoting the repair of chemical liver damage of the prawns, protecting livers of the prawns and effectively preventing a feeding water body from being polluted so as to increase the yield and improve the quality of the prawns; according to the method, safety and pollution-free property are achieved, the operation is simple and convenient, the production cost is low and production of various scales is facilitated.

Description

technical field [0001] The invention relates to a feed additive for prawns, in particular to a microbial fermented product which protects the hepatopancreas of prawns from chemical damage and is compoundly added to prawn feed and a preparation method thereof. Background technique [0002] The liver function of prawns is to secrete digestive enzymes and absorb and store nutrients. At the same time, the liver of prawns has the function of detoxification and defense; it can produce coagulation factors; metabolize various vitamins, fats, proteins and hormones; if the liver of prawns is damaged, the whole body organs of prawns will collapse. [0003] With the technological development of the aquaculture industry and the increasing demand for prawns, farmers need to expand the aquaculture area and the density of prawn farming to meet the market demand. The problem of shrimp farming is becoming more and more prominent. [0004] At present, the common problems in shrimp farming ar...

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Problems solved by technology

[0005] 1. Farmers mostly use high-protein and high-energy full-price compound feeds to increase the nutrient content of the feeds. Excessive fat content in the feeds will lead to incomplete digestion and absorption of excessive fat by prawns, resulting in a large number of The fat accumulated in the liver and body of the shrimp will make the liver of the shrimp heavier and seriously affect its liver function and normal growth; in addition, if the vitamin content in the feed is too high, it will also cause vitamin metabolism disorders in the shrimp liver

[0006] 2. Excessive accumulation of organic matter in the breeding environment, rapid reproduction of bacteria, and greater damage to the liver of prawns; breeding water quality indicators, such as pH value, ammonia nitrogen, nitrite and other indicators exceeding the standard, mo...

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