Feed additive for reducing intestinal diseases of cultured fishes and preparation method of feed additive

Abstract

The invention discloses a feed additive for reducing intestinal diseases of cultured fishes and a preparation method of the feed additive. The preparation method comprises the following steps that wetbrewer's grains or dry brewer's grains are selected, a discharging port of a stirrer is sealed, and the wet brewer's grains or dry brewer's grains are conveyed into the horizontal stirrer through anauger; saturated steam is introduced into molasses liquid for stirring, then the mixture is added into the stirrer, steam is introduced, and the temperature of materials is adjusted; the inner wall ofa fermentation tank is washed and preheated by using high-temperature steam, the materials with adjusted temperature are conveyed to the fermentation tank through the auger, and water is added to adjust the water content of the materials; saccharomycetes and protease are added into the fermentation tank for fermentation enzymolysis; the fermented materials are sent to a fluidized bed for drying,the materials are conveyed into a crusher through wind, crushed and sieved, and the feed additive for reducing the intestinal diseases of the cultured fishes is obtained. The problem of antibiotic residues caused by antibiotic administration and the problems of complicated manual administration operation and the like can be effectively solved, the economic benefit is remarkable, and the social benefit is obvious.

Description

technical field [0001] The invention belongs to the technical field of aquaculture and feed development, and in particular relates to a feed additive for reducing intestinal diseases of cultured fish and a preparation method thereof. Background technique [0002] Brewer's grains are the main by-products of beer brewing factories, containing cellulose, hemifiber and protein, and the total amount of cellulose reaches more than 45%. Because of high water content, large output, no proper treatment technology, and no good application channels, it is often discharged as waste or sold at a low price. Fresh brewer's grains are low in value and pollute the environment. [0003] Large-scale and intensive aquaculture spreads all over China, which is an important way to solve the protein food in our country. The traditional feed raw materials for ordinary freshwater fish only provide conventional nutrients such as protein, amino acid, energy, and cellulose. Fish have short intestines a...

AI Technical Summary

Problems solved by technology

When enteritis occurs in fish, bleaching powder, sulfonamides, furans or a variety of Chinese herbal medicines are usually used to prevent and control, but the control effect is often not obvious or stable, or even ineffective, and the use of these chemical products or antibiotics leads to secondary pollution of water bodies , and even cause drug residues in aquatic products