Method for preparing sweet potato skin/ sweet potato powder dreg fermented feed

Abstract

The invention relates to a sweet potato skin / sweet potato powder dreg fermented feed and a preparation method thereof. The fermented feed comprises fresh sweet potato skins or sweet potato dregs, an adsorbent, dreg cakes, urea, ammonium sulfate, calcium hydrophosphate, magnesium sulfate, Aspergillus oryzae, Aspergillus niger, Saccharomyces cerevisiae, Candida, and lactobacillus. By means of the oxygen-consuming fermentation of the Aspergillus niger, saccharomycetes and Aspergillus oryzae, all of which are capable of favorably producing various enzyme systems, pectin, crude fibers, protein, starch and other macromolecular substances in fermentation materials are degraded rapidly; in addition, an inorganic nitrogen source is converted into mycoprotein, wherein the lactobacillus produces lactic acid and other active nutrient substances by using micromolecular nutrient substances. The preparation method has the advantage of reducing environment pollution and resource waste caused by difficulty in utilizing the sweet potato skins and the sweet potato powder dregs; after being fed, the fermented feed has the advantages of reducing cultivation cost, increasing cultivation benefits, reducing the cost investment in enzyme preparations and protein feed and increasing the productivity. The fermented feed is a novel resource-utilization type biological feed and has very high economic and social effects.

Description

technical field [0001] The invention relates to a microbial fermented feed, in particular to a microbial fermented feed with sweet potato skin or sweet potato powder dregs as the main raw material and a preparation method thereof. Background technique [0002] In recent years, sweet potatoes have been widely planted in Longyan, Fujian. Sweet potatoes are processed into dried potatoes and sweet potato vermicelli for sale all over the country. The sweet potato planting and processing industry has become an important way for local farmers to increase their economic income. The processing of dried sweet potatoes produces a large number of by-products, sweet potato skins, and sweet potato flour residues produced by processing sweet potato flour. They are good feed for raising livestock, but if they are not dried in time, they are easy to become rancid and pollute the environment. Most sweet potato processing is in winter, and winter Sweet potato skin and sweet potato powder resid...

AI Technical Summary

Problems solved by technology

The processing of dried sweet potatoes produces a large number of by-products, sweet potato skins, and sweet potato powder residues produced by processing sweet potato flour. They are good feed for raising livestock, but if they are not dried in time, they are easy to become rancid and pollute the environment. Most sweet potato processing is in winter, and winter Sweet potato skin and sweet potato powder dregs are difficult to dry

Even after a long time of drying, it is labor-intensive and time-consuming, and its nutritional loss is relatively large, and the protein, calcium, and phosphorus contents of sweet potato skin and sweet potato powder residue are very small, and the protein contained in the dry matter of sweet potato skin and sweet potato powder residue is about 4%, and the sweet potato skin and sweet potato flour residue contain pectin (pectin accounts for about 20% of the dry matter of the sweet potato skin) and other non-digestible substances are relatively high, which can easily cause diarrhea, indigestion, loss of appetite and other symptoms in livestock and poultry, so Directly added as feed, the added amount is small, and the economic benefit is not obvious