One group (PRE) was fed the prebiotic lactulose
at 1% (w/w) of the feed on a daily basis mixed into the feed. A further group (PRO) was fed probiotic L. plantarum B2984
(resuspended in 0.1M pH 7.2 PBS) which was diluted in sterile water and mixed with ∼150 g of feed for each pig to receive
∼1×1010cfu/pig/day.