Preparation method of acidified small-peptide protein feed

Abstract

The invention belongs to the technical field of feeds, enzymic preparations and microorganisms, and in particular relates to a preparation method of an acidified small-peptide protein feed. The preparation method comprises the following steps: mixing soybean meal, rice protein, wheat protein, potato protein and water; performing size mixing, sterilizing and cooling so as to prepare a fermentation broth; adding bacillus subtilis strain liquid and saccharomycetes strain liquid to the fermentation broth to perform aerobic fermentation and enzymolysis on the liquids; carrying out solid-liquid separation to obtain small-peptide protein fluid and a protein solid content wet basis; concentrating small-peptide protein fluid to obtain small-peptide protein size; mixing the protein solid content wet basis, a protein feed, lactic acid bacteria strain liquid and microorganism protease; performing solid anaerobic fermentation and enzymolysis to obtain fermentation protein residue; absorbing and uniformly mixing the small-peptide protein size, the fermentation protein residue and lactic acid; and then drying. The acidified small-peptide protein feed is rich in small peptide, lactic acid, yeast protein, probiotics and other small molecular nutrients, and has the characteristics of being balanced in amino acid, high in nutrition, easy to digest, high in palatability, low in content of antinutritional factors, and the like.

Description

technical field [0001] The invention belongs to the technical fields of feed, enzyme preparations and microorganisms, and in particular relates to a preparation method of acidified small peptide protein feed. Background technique [0002] As we all know, my country's fishery resources are scarce, fishmeal production is insufficient, and the quality is deviation. my country's per capita milk output is very low, the scale of the dairy product deep processing industry is small, and all whey powder for feeding is imported. As far as high-grade feed raw materials are concerned, my country uses foreign exchange to import more than 1 million tons of fish meal and more than 300,000 tons of whey protein powder every year. In 2012, China imported 1.17 million tons of fishmeal and 380,000 tons of whey protein powder. In addition, there are certain safety hazards in animal-derived products. Because of this, the use of animal-derived feed products such as fish meal and blood meal is p...

AI Technical Summary

Problems solved by technology

[0010] The present invention aims to overcome the mold contamination of the above-mentioned fermented soybean meal, incomplete fermentation and enzymolysis, low content of small peptides and lactic acid, unstable quality, poor feeding effect, high drying cost, prone to Maillard reaction, and unbalanced amino acid nutrition To solve such problems, a preparation method of acidified small peptide protein feed is provided. The acidified small peptide protein feed prepared by this method is rich in small molecule nutrients such as small peptides, lactic acid, yeast protein and probiotics, and has amino acid balance, high nutrition, and easy digestion. , good palatability and low content of anti-nutritional factors