Abstract
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.
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