Abstract: In order to understand the effect of Diludin on the growth of growing-pigs and the mechanism of promoting growth, we carried out the trail by 21 growing pigs(25 kg) which were selected and devided into three groups. Diludin with different concentrations (0 mg/kg, 10 mg/kg, 20 mg/kg)were added in each group’s feed. The result showed that Diludin in 20 mg/kg group could promote the growth of growing pigs in prothase of experiment. But Diludin could not promoted the growth in amaphase. The concentration of T₃, T₄, GH and Insuline had the increase tendency only in prophase. The Diludin in 10mg/kg group could not promote the growth of growing pigs.

Key words: diludin; growth performance; pig