Biological fermented feed for freshwater shrimps and crabs as well as preparation method and application of biological fermented feed

Abstract

The invention relates to the field of biological feeds, and particularly provides a biological fermented feed for freshwater shrimps and crabs as well as a preparation method and application of the biological fermented feed. The biological fermented feed for freshwater shrimps and crabs comprises a fermentation base material and a fermentation bacterium solution, wherein the fermentation base material comprises the following raw materials in parts by weight: 35-40 parts of corn, 25-35 parts of soybean meal, 8-12 parts of fish meal, 8-10 parts of wheat bran, 8-15 parts of spirulina, 10-15 partsof rice bran, 2-3 parts of fish oil, 2-6 parts of rotifers, 3-6 parts of shrimp shell powder, 8-12 parts of stone powder, 2-4 parts of calcium dihydrogen phosphate and 0.15-0.25 part of complex enzymes; the fermentation bacterium solution is prepared through propagation of composite fermentation strains including bacillus licheniformis, lactobacillus acidophilus, bifidobacteria, pediococcus pentosaceus, candida utilis and saccharomyces cerevisiae; and the weight ratio of the composite fermentation strains to the fermentation base material is (0.5-1.0) to 1000. According to the biological fermented feed disclosed by the invention, the conversion rate of the feed for freshwater shrimps and crabs can be notably increased, the bait coefficient can be reduced, the attack rate of the shrimps and crabs can be reduced, the water quality can be improved, and the quality of the biological fermented feed is more stable than that of a general biological fermented feed.

Description

technical field [0001] The invention relates to the field of biological feed, and specifically provides a biologically fermented freshwater shrimp and crab feed, a preparation method and application thereof. Background technique [0002] With the improvement of people's living standards, the demand for freshwater shrimp and crabs in my country is increasing, and the scale and quantity of breeding are increasing. Where there is a market, there is investment. The technology and products in shrimp and crab farming are constantly innovating, and the requirements of consumers are also increasing. In order to cater to the market, more and more freshwater shrimp and crab farmers not only value production, but also attach great importance to quality. At present, there are two main means to increase production: 1. Increase the stocking density of shrimp and crab seedlings, which will lead to smaller specifications of finished shrimp and crabs; 2. Excessive feeding. This method will ...

AI Technical Summary

Problems solved by technology

At present, there are some common problems in the existing shrimp and crab bio-fermented feed: 1. The time required for fermentation is long; 2. It needs to be dried, which is often used to reduce the moisture content of the biological feed. Deterioration, increase the storage time, and reduce the water content to prevent mildew and also affect other beneficial bacteria in the biological feed, so there may be problems with the quality stability of this biological feed

[0005] 3. At present, most of the nutrients in freshwater shrimp and crab bait are macromolecules, so the efficiency of animals' digestion, absorption and utilization of them is low;

[0006] 4. At present, there are biologically fermented feeds, and there are generally problems of unstable quality, especially the problem of easy contamination by bacteria

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