Method for turning Brassica pekinensis (Lour.) Rupr. residues into feed by utilizing by-products in powder production industry

The invention provides a method for turning Brassica pekinensis (Lour.) Rupr. residues into feed by using by-products in the powder production industry. The method comprises the following steps of cutting the Brassica pekinensis (Lour.) Rupr. residues into small pieces of 1-3cm, uniformly mixing the small pieces with wheat bran according to a mass ratio of (323-383): (117-177), reducing the moisture, and performing anaerobic fermentation at a proper temperature to obtain the Brassica pekinensis (Lour.) Rupr. residue feed. According to the method, the yield of percolate in a fermentation process can be effectively reduced, the content of short-chain fatty acid, the content of soluble sugar, the number of lactic acid bacteria and the content of free amino acid can be increased, the number of enteric bacilli, the number of saccharomycetes, the content of ammoniacal nitrogen and the content of cellulose can be reduced, the Brassica pekinensis (Lour.) Rupr. residues and the by-products in the powder production ind