Abstract: This experiment used the single factor completely randomized experimental design, a total of 72 weaning Xiang pigs were divided into three groups randomly. Every group had 24 heads. a (control group): basal diet; b: basal diet +300 mg/kg coated sodium butyrate; c: basal diet + 500 mg/kg coated sodium butyrate. Study of compound coated sodium butyrate on weaning Xiang pig growth performance and blood biochemical index influence. The experimental result indicated that: compared with the control group, the compound coated sodium butyrate could significantly improve feed conversion rate(P<0.05), and significantly reduce weaning Xiang pig’s diarrhea rate (P<0.05).The A/G, GLB, IgG, and AKP were content along with the coated sodium butyrate showed higher increasing in the tendency. It was suggested that adding 300 mg/kg coated sodium butyrate in compound feed of Xiang pig was better than adding 500 mg/kg.

Key words: compound coated sodium butyrate; Xiang pig of weaning; growth performance; blood biochemical index