Fig. 5

Effects of putrescine supplementation on ERK1/2 and FAK phosphorylation in the jejunal mucosa of piglets. a Dietary supplementation with putrescine increased the phosphorylation of ERK1/2 and FAK in the jejunal mucosa of piglets. b Dietary supplementation with putrescine had no effect on the total amount of the ERK1/2 and FAK proteins in the jejunal mucosa of piglets, but the mucosal ODC protein abundance was decreased by dietary supplementation with 0.3% putrescine dihydrochloride. Values are means ± SE, n = 6. Means with different letters are different (P < 0.05). Ctrl, control; ODC, ornithine decarboxylase; P-ERK1/2, phospho-ERK1/2; P-FAK, phospho-FAK; Put, putrescine dihydrochloride