A kind of pretreated corn steep liquor and its direct injection method in livestock and poultry feed

Abstract

The invention discloses pretreated corn steep liquor and a direct spray using method thereof in a livestock and poultry feed. The moisture of the corn steep liquor can be effectively reduced, and besides, toxic and nutrition-resistant factors in the corn steep liquor are effectively removed, so that the pretreated corn steep liquor can be directly used for feeding livestock and poultry. In particular, the pretreatment method of the corn steep liquor comprises the following steps of (1 ) adding alkali liquor to the corn steep liquor, performing stirring treatment, and regulating the pH of the corn steep liquor to be 5.2-5.3; (2) adding phytase to the corn steep liquor of which the pH is regulated, and performing stirring and uniform mixing treatment; and (3) separately inoculating the corn steep liquor after being subjected to enzymolysis in step (2) with cultured bacillus amyloliquefaciens (Bacillus amyloliquefaciens) and aspergillus niger ( Aspergillus niger ), performing fermentation culturing, and after culturing is finished, obtaining the corn steep liquor.

Description

technical field

[0001] The invention belongs to the technical field of feed production, in particular to pretreated corn steep liquor and its direct injection method in livestock and poultry feed. Background technique

[0002] Corn steep liquor is the main by-product of corn deep processing. It is produced by crushing and separating corn after soaking in sulfurous acid solution. It is rich in soluble protein, auxin and some precursor substances, and contains about 40% to 50% solids Substance, taste slightly salty. At present, dry corn steep liquor powder has been widely used in antibiotic industry, vitamin, amino acid, enzyme preparation and other fermentation industries. Wang Zhiye, Qi Hongshan, et al. Application of corn steep liquor in dextran fermentation production [J]. China Brewing, 2008, 27(19):64-66.) reported corn steep liquor as one of the nitrogen sources for dextran fermentation, studied The impact of corn steep liquor addition on dextran, research shows, when...