Antibiotic-free concentrated feed for laying chicks and preparation method of antibiotic-free concentrated feed

The invention discloses an antibiotic-free concentrated feed for laying chicks and a preparation method of the antibiotic-free concentrated feed, and belongs to the field of animal feeds. The antibiotic-free concentrated feed mainly comprises dehulled soybean meal, plumule meal, mealies alcohol grains and soluble matters of the mealies alcohol grains, stone powder, calcium hydrogen phosphate, edible salt, cottonseed meal, rapeseed meal, soybean oil, choline chloride, a composite premix, yeast cell wall polysaccharide, bacillus licheniformis, bacillus subtilis, lactobacillus acidophilus, clostridium butyricum, selenium yeast, DL-methionine, a coated slow-release acidifier, phytase, glucanase, xylanase and cellulase. According to the feed disclosed by the invention, conventional raw materials are fully used, and digestive enzymes such as yeast cell wall polysaccharide, high-temperature-resistant microecologics and an enzymic preparation are added on the basis of the full use of the conventional raw materials; under a condition that antibiotic is not used, the immunity of animal organs is enhanced, the health condition of animals is improved, and the breeding economic benefits are enhanced. The feed is mainly used for breeding laying chicks.