本研究旨在考察银耳多糖（TP）对生长肥育猪生产性能、免疫功能及肉质的影响，并与抗生素的效果进行比较。本试验采用单项分类设计，将24头去势杜×长×大仔猪［(10.01±0.65) kg］按体重相近的原则随机分为对照组、抗生素组（恩拉霉素+硫酸抗敌素，ANT组）和银耳多糖组（TP组）。结果显示：1）20 kg前TP组的平均日增重（ADG）略低于ANT组，此后显著高于ANT组（P＜0.05）；TP组较对照组显著提高了各阶段的ADG，降低了全期料肉比（P＜0.05）。2）TP组血清IGF-Ⅰ浓度较ANT组不断提高，112 d达显著水平（P＜0.05），且各阶段均显著高于对照组（P＜0.05）。3）较之ANT，TP能显著提高各阶段淋巴细胞转化率（LTR）和血清白细胞介素-2浓度（P＜0.01）；与对照组相比，TP可不同程度地提高LTR以及血清IgG浓度（P＜0.05）。4）与ANT相比，TP能显著降低肌肉滴水损失和亮度L*值（P＜0.05），提高肌内脂肪含量；较之对照组，TP可显著提高眼肌面积和pH，降低黄度b*值（P＜0.05）。结果表明，TP可以提高生长肥育猪各阶段的生产性能，其促生长效果优于抗生素，并且还具有提高免疫功能和改善肉质的作用。

The study was conducted to investigate the effects of Tremella polysaccharides (TP) and antibiotics on the growth performance, immune function and meat quality of growing-finishing pigs. Twenty-four castrated Duroc×Landrace×Yorkshire pigs ［(10.01±0.65) kg］ were randomly allocated into 3 treatments according to their body weights. One treatment was the control group fed basal diets, and the other two treatments were fed the same basal diets supplemented with antibiotics (Enramycin 20 mg/kg+Colistin sulfate 40 mg/kg, ANT) and TP (4 000 mg/kg), respectively. The results showed that: 1) during the phase before 20 kg, average daily gain (ADG) of the TP group was slightly lower than that of the ANT group, but significant improvement was observed thereafter (P<0.05). Compared with the control group, TP significantly improved the ADG of pigs in each feeding phase (P<0.05 or P<0.01), and the F/G ratio of the whole phase was significantly decreased (P<0.05). 2) Compared with the ANT group, serum IGF-Ⅰ concentration of the TP group was improved, and significant difference was observed on d 112 (P<0.05). Compared with the control group, serum IGF-Ⅰ concentration of the TP group was significantly improved in the whole duration. 3) Compared with the ANT group, T lymphocyte transfer ratio and serum IL-2 concentration of the TP group were significantly improved in the whole duration (P<0.01). TP significantly improved the T lymphocyte transfer ratio and serum IgG concentration by different extent compared with the control group (P＜0.05). 4) Compared with the ANT group, the content of intramuscular fat of the TP group was significantly improved (P<0.05), and the drip loss and L* value of the TP group were significantly decreased (P<0.05). Compared with the control group, TP supplementation significantly improved the loin eye area and pH of the longissmus musle, while b* value was decreased (P<0.05). These results indicate that TP shows a better growth promotion effect than the antibiotics on growing-finishing pigs, and it also has positive effects on the immune function and meat quality of growing-finishing pigs.［Chinese Journal of Animal Nutrition, 2010，22（6）:1644-1649］