The invention provides a compound
fermentation biological feed and a preparation method thereof. The method comprises the steps of
fermentation of base material components, a
fermentation process and the like. The compound fermented biological feed is prepared from the following raw materials in parts by weight: 65 to 72 percent of corn, 5 to 12 percent of
soybean meal, 9 to 12 percent of rice
bran meal, 7 to 10 percent of
bran, 1.0 to 1.5 percent of mountain flour, 0 to 0.2 percent of
calcium hydrophosphate, 0.5 to 0.9 percent of
lysine, 0 to 0.1 percent of
methionine, 0.1 to 0.2 percent of
threonine, 0 to 0.1 percent of
tryptophan, 0.2 to 0.5 percent of table salt, 0 to 0.05 percent of
phytase, 0.01 to 0.03 percent of multi-
vitamin and 0.2 to 0.3 percent of multi-mineral. The six fermentation strains, namely
lactobacillus rhamnosus,
lactobacillus plantarum,
bacillus licheniformis,
bacillus subtilis,
saccharomyces cerevisiae and candida utilis, are adopted. According to the present invention, the high-quality biological fermentation feed is produced by using the conventional complete feed, the
nutrition is balanced, the
palatability is good, the concentration of
ammonia gas and
hydrogen sulfide in the
manure odor of the fattening pigs can be significantly reduced by more than 60%, and the air environment of the pig house is improved; meanwhile, the
feed conversion ratio can be reduced by 14.5%, the production performance is effectively improved, and the feed cost is remarkably reduced.