Feed for medium pigs

The invention discloses a feed for medium pigs. The feed consists of the following raw materials in parts by weight of 50-60 parts of corn, 9-12 parts of wheat bran, 16-25 parts of soybean meal, 4-8 parts of rice bran, 4-8 parts of middling, 1-4 parts of bone meal and 2-5 parts of a Chinese herbal medicine preparation, wherein the Chinese herbal medicine preparation consists of the following raw materials in parts by weight: 8-15 parts of radix angelicae sinensis, 5-10 parts of radix astragali, 6-12 parts of Chinese yams and 1-5 parts of radix codonopsis. After the feed for medium pigs is fedto the pigs, growth and development are quick, the adaptability is good, the healthy growth of the medium pigs can be promoted, and the quality of pork can be improved; in the growth process of the medium pigs, the survival rate of the medium pigs is high, the situation that the medium pigs are thin, do not become fat, generate swine infuenza or streptococcal disease cannot appear, and the growthand fattening effects at a later stage are not influenced; and the feed is free from antibiotics and is low in production cost.