中文摘要：

为给白术粗多糖在饲料工业中的开发和应用提供理论依据，选用28日龄二元杂交断奶仔猪（长×大）150头（平均体重为7．5kg）进行试验．将试验猪随机分为5组：Ⅰ组（CK）：饲喂基础日粮；Ⅱ组（ANT）：饲喂基础日粮＋抗生素；Ⅲ组（0．3％PAM）：饲喂基础日粮＋0．3％白术粗多糖；Ⅳ组（0．6％PAM）：饲喂基础日粮＋0．6％白术粗多糖；Ⅴ组（0．9％PAM）：饲喂基础日粮＋0．9％白术粗多糖．试验分两期进行，共28d：第1期（第1～14天）和第2期（第15～28天）．结果表明，日粮中添加适宜剂量的白术粗多糖不仅能够显著提高平均日增重，还能提高饲料报酬，降低腹泻率．同时对于相关的血液生化指标，0．6％和0．9％添加量的白术粗多糖组也表现出优予基础组和抗生素组的趋势，且以0．6％的白术粗多糖添加组的效果最为稳定．

英文摘要：

It will be a theoretical support for the development and utilization of the polysaccharides of Atractylodes macrophala Koidz on feed industry. A total of 150 two-line crossbred （Landrace×Yorkshine）28-day early-weaned piglets（average weight is about 7.5 kg） were randomly assigned to 5 treatments with 3 replicates. Ⅰ.based diet group（CK）, Ⅱ.based diet＋antibiotic group, Ⅲ.based diet＋0.3% polysaccharide added group, Ⅳ.based diet＋0.6% polysaccharide added group, Ⅴ.based diet＋0.9% polysaccharide added group. This experiment had two phases, a total of 28 days： the first phase （1～14 days）, the second phase（15～28days）. The results showed that adding proper polysaccharides to diets could not only increase ADG significantly （p〈0.05）, but also increase the F/G, decrease the diarrhea ratio. And for the correlative blood biochemistry indexes, group Ⅳ and Ⅴ were better than group Ⅰ and Ⅱ, and the effect of group Ⅳ was the most stable.