An experiment was conducted to evaluate the effects of herbal extract mixture (HEM, Astragalus membranaceus and Codonopsis pilosula) supplementation on growth performance, nutrient digestibility, and foot-and mouth disease (FMD) antibody titers in growing-finishing pigs. A total of 120 FMD type O vaccinated growing pigs ([Yorkshire × Landrace] × Duroc) with an average initial body weight (BW) of 25.19 ± 1.80 kg were randomly allotted into 3 treatments with 8 replicate of 5 pigs per pen for a 16-week feeding trial. All pigs were vaccinated against FMD. Treatments consisted of CON, Corn-soybean meal based basal diet; TRT1, CON + 0.5 g kg⁻¹ HEM; TRT2, CON + 1g kg⁻¹ HEM. Pigs fed with 1g kg⁻¹of HEM showed higher (P< 0.05) BW and ADG on week 12, 16, and overall period. Herbal extract mixture supplementation at the dose of 1g kg⁻¹showed higher FMD type O antibody titers (P< 0.05) at week 14 compared with non-supplemented group. Theseresults indicated that HEM supplementation at 1g kg⁻¹dose may confer anti-viral effect against FMD thereby improving the average daily gain of the growing-finishing pigs. Herbal extract mixturemay potentially be used as an anti-viral agent to help increase FMDV type O antibody titer after vaccination.

进行了一项实验，以评估草药提取物混合物（HEM，黄芪和党参）对生长肥育猪的生长性能，养分消化率和口蹄疫（FMD）抗体效价的影响。将平均平均初始体重（BW）为25.19±1.80千克的120头FMD O型接种疫苗的生长猪（[约克郡×长白]×杜洛克）随机分配到3种处理中，每只钢笔5头猪重复8次，共16头周喂养试验。所有猪都接种了FMD疫苗。治疗方法包括：CON，以玉米豆粕为基础的基础饮食；TRT1，CON + 0.5 g千克^-1 HEM; TRT2，CON +1 g kg ^-1 HEM。饲喂1g kg ^-1的猪在第12周，第16周以及整个时期，HEM的BW和ADG较高（P <0.05）。与未补充的组相比，以1g kg ^-1的剂量添加草药提取物混合物显示第14周的FMD O型抗体滴度更高（P <0.05）。这些结果表明，以1g kg ^-1的剂量补充HEM可以赋予抗FMD的抗病毒作用，从而改善生长肥育猪的平均日增重。草药提取物混合物可潜在地用作抗病毒剂，以帮助增加疫苗接种后FMDV O型抗体的效价。