Solid-state fermentation wheat bran feed, and preparation method and application thereof

Abstract

The invention provides a solid-state fermentation wheat bran feed, and a preparation method and an application thereof. The feed comprises the following raw materials in parts by weight: 1-3 parts ofwheat bran, 1.2-3.2 parts of a nutrient solution, 0.15-0.45 part of an aspergillus niger-trichoderma viride-streptomyces rouxii composite bacterial suspension and 0.05-0.15 part of a candida tropicalis suspension. The preparation method comprises the following steps: respectively activating and culturing aspergillus niger, trichoderma viride, streptomyces rouxii and candida tropicalis, then compounding the aspergillus niger, the trichoderma viride and the streptomyces rouxii, mixing an obtained mixture with wheat bran for primary fermentation, and adding candida tropicalis for secondary fermentation after completion of primary fermentation. According to the invention, by selection of the streptomyces rouxii, the aspergillus niger and the trichoderma viride, abundant enzymes like cellulase,pectinase and amylase can be generated in the growth process, so components like cellulose uneasily utilized by animals in wheat bran can be easily degraded; meanwhile, the candida tropicalis can berapidly propagated by utilizing a fermentation product, namely reducing sugar in the later period of fermentation, and a large amount of mycoprotein is generated at the same time; and through synergistic effect of the streptomyces rouxii, the aspergillus niger and the trichoderma viride, the content of cellulose in the feed can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of feed preparation, and in particular relates to a solid-state fermented wheat bran feed and a preparation method and application thereof. Background technique [0002] In recent years, with the increasing population and decreasing arable land area, the shortage of feed raw materials has become more and more serious, which seriously restricts the development of my country's animal husbandry industry. At present, my country's feed accounts for about 35% of the total grain output, and it is estimated that by 2020 and 2030, this proportion will reach 45 and 50% respectively. However, the expected increment of grain is only about 1% every year, and the shortage of feed grain is inevitable. Therefore, improving the utilization rate of my country's existing feed resources is the key link to alleviate this contradiction. Wheat bran is the main by-product of the milling industry. The annual output of wheat in my ...

AI Technical Summary

Problems solved by technology

At present, fermented wheat bran is mostly fermented by a single strain. This kind of fermented wheat bran can greatly increase its protein content, especially soluble protein content, but it has poor decomposition effect on refractory substances such as cellulose, and cannot effectively degrade wheat bran. its application in animal husbandry

Images