葡萄糖氧化酶对断奶仔猪生长性能及肠道健康的影响

摘要

试验旨在研究葡萄糖氧化酶(GOD)对断奶仔猪生长性能及肠道健康方面的影响,讨论其可能的作用机理.试验选用160头10kg断奶仔猪,根据体重随机分为Ⅰ、Ⅱ、Ⅲ和Ⅳ共4个处理组,每个处理5个重复,每个重复8头猪.试验Ⅰ组不添加GOD,饲喂基础日粮;Ⅱ组在基础日粮中添加100 mg/kg金霉素;Ⅲ和Ⅳ组分别给予0.1%、0.2%的GOD.结果显示,与对照相比,日粮中添加0.2%的GOD日增重显著提高(P＜0.05);饲料转化效率趋于提高(0.05＜P＜0.15);胃和十二指肠pH显著降低(P＜0.05);十二指肠绒毛高度及VH/CD显著提高(P＜0.05);日粮干物质及粗蛋白质消化率显著提高(P＜0.05).因此,日粮中添加0.1%～0.2%的GOD能够降低断奶仔猪胃肠道pH,改善肠道形态结构,提高营养物质消化率和饲料转化效率,提高断奶仔猪生产性能.%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 Ⅰ fed basal diets, did not give GOD and biomycin group, Ⅱ fed 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 group Ⅰ (P＜0.05).The F : G was tendency decreased (0.05＜P＜0.15) in group Ⅳ when compared with group Ⅰ.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.