Abstract: The aims to study the effects of glucose oxidase (GOD) on performances of weanling piglets, and gastrointestinal tract health. In this experiment 160 pigs were randomly divided into 4 treatments, with each treatment represented by 5 replicates of 8 pigs. The pigs in group Ⅰfed basal diets, did not give GOD and biomycin group, Ⅱfed basal diets with the addition of 100 mg/kg biomycin, Ⅲ and Ⅳ groups received basal diets with the addition of 0.1%, 0.2% GOD, respectively. The experimental period was lasted for 4 weeks. The pigs in group Ⅳ obtained a higher yield of average day gain than that in groupⅠ(P<0.05). The F∶G was tendency decreased (0.05<P<0.15) in group Ⅳ when compared with groupⅠ. Piglets supplied with GOD increased height of duodenum villus and ratio of VH/CD (P<0.05), but decreased pH of stomach and duodenum (P<0.05) when compared with not supplied GOD and biomycin piglets. Digestibility of dry matter and crude protein of dietary were higher in piglets added with GOD when compared with not supplied with GOD groups. The results showed that GOD increased piglets ADG and CRF, and then help the weanling pigs increase their production, through improved piglets gastrointestinal structure and environment.

Key words: glucose oxidase (GOD); weanling pig; production performance; gastrointestinal health