Low-emission environmentally-friendly feed as well as preparation method and application thereof

The invention relates to a low-emission environmentally-friendly feed as well as a preparation method and application thereof. The feed comprises the following components in parts by weight: 70-80 parts of carriers, 3-8 parts of plasma protein powder, 3-8 parts of dried porcine soluble, 2-5 parts of white fish meal, 4-6 parts of whey powder, 1-4 parts of wheat bran and 3-5 parts of a premix. The preparation method of the feed is prepared through the following steps of weighing the carriers of which the mass is 50-70% of the total mass of the carriers, adding the plasma protein powder, the dried porcine soluble and the wheat bran in parts by weight, uniformly mixing the carriers, the plasma protein powder, the dried porcine soluble and the wheat bran, and performing crushing and drying so as to obtain a mixture A; uniformly mixing the surplus carriers, the white fish meal, the whey powder and the premix in parts by weight, and performing quenching and tempering so as to obtain a mixture B; and mixing the mixture A and the mixture B according to the mass ratio of the mixture A to the mixture B being 1:1 so as to obtain the feed. Compared with the prior art, the feed disclosed by the invention is balanced in nutrition, the absorption and utilization rate of organisms to the feed can be effectively increased, the growth and the development of pigs can be promoted, the content of nutrient substances in the excrement of the pigs can be obviously reduced, and the feed has good application prospects.