Based on the Chinese medicine theory and the practical conditions of swine production and the biology characteristics of pigs at different growth periods, a set of Chinese herbs feed additive for three stages of swine (postweaning , growing, finishing swine) were developed. And a feeding trial (from 20kg-110kg) was conducted to examine its effects on performance and carcass quality of growing-finishing pigs. 72 pigs (Duroc x Landrace x Yorkshire, 20kg initially) were selected and allocated to 3 groups at ra...