Abstract
A total of 120 weanling pigs [(Yorkshire × Landrace) × Duroc, weaned at day 21 after birth] with an average body weight (BW) of 7.95 ± 1.22 kg were used in 6-week experiment to evaluate the effects of lactulose supplementation on growth performance, nutrient digestibility, blood profiles, faecal microbial shedding, faecal score and faecal noxious gas emission. Pigs were randomly allotted to one of four experimental diets according to initial BW. There were six replicate pens per treatment with five pigs per pen. Dietary treatments were: NC, basal diet; PC, NC + 0.05% tiamulin; L1, NC + 0.1% lactulose; L2, NC + 0.2% lactulose. The experiment included two phases (days 1–14 and days 15–42). Pigs fed PC and L1 diets had greater (P < 0.05) average daily gain (ADG) and gain/feed (G/F) than those fed NC diet during days 1–14. The average daily feed intake (ADFI) was improved (P < 0.05) by PC and L1 treatments compared with NC treatment during days 15–42. During days 1–42, ADG and ADFI were higher (P < 0.05) in P...
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