Feed additive for freshwater fishes and preparation method of feed additive

Abstract

The invention provides a feed additive for freshwater fishes and a preparation method of the feed additive. The feed additive is prepared from, by weight, 10-15 parts of radix angelica sinensis, 5-10 parts of cyrtomium rhizomes, 8-12 parts of medicated leaven, 6-8 parts of hawthorn fruits, 5-8 parts of dried tangerine or orange peel and 8-15 parts of composite microbial thalli. The preparation method comprises the following steps that 1, radix angelica sinensis, cyrtomium rhizomes, medicated leaven, hawthorn fruits and dried tangerine or orange peel are weighed according to the compatibility quantity to serve as raw materials in the group A, the raw materials in the group A are mixed and ground into crude powder, water is added according to 10-20 times of the weight of the medicinal materials, extraction is carried out at the temperature of 95 DEG C to 100 DEG C, filtering is carried out to obtain medicine liquid, and the medicine liquid is concentrated to 1:1 to obtain extract; 2, the composite microbial thalli are weighed according to the compatibility quantity, the extract in the step 1 and the composite microbial thalli are mixed and stirred to be uniform, pile turning fermentation is carried out for 2-3 days, a fermentation product is obtained, and the fermentation product is crushed to obtain the feed additive. According to the feed additive, the weight of Hucho taimen can be greatly increased, and the Hucho taimen cannot die after being cultured for a long time.

Description

technical field [0001] The invention belongs to the technical field of feed additives, in particular to a feed additive for freshwater fish and a preparation method thereof. Background technique [0002] The long-term use of antibiotics in animal feed has led to increasingly strong drug resistance of pathogenic microorganisms in the intestines of animals and in the environment, and the effect of antibiotics on disease resistance and growth promotion of livestock and poultry has gradually decreased, so that the amount of antibiotics added in feed continues to increase. The amount of traditional Chinese medicine residues in livestock and poultry products continues to increase. Modern medical research has shown that antibiotic residues in animal foods may cause mutations in the human DNA structure, resulting in serious consequences of "disability", "teratogenicity" and "carcinogenicity", posing a great threat to human health. [0003] Chinese herbal medicine is the general nam...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing feed additives have an inhibitory effect on the growth of salmon, the present invention proposes a feed additive for freshwater fish. The feed additive can not only greatly increase the weight of salmon, but also does not increase the weight of salmon after long-term feeding. death occurred