Effects of dietary supplementation of FP on fecal microbial enzymes based on the PICRUSt2 function prediction analysis in weaning piglets (n = 8). (A) The PCA plot is based on the enzymes; (B) the relative abundance of microbial enzymes related to SCFA synthesis. EC 1.1.1.27, L-lactate dehydrogenase; EC 2.3.1.8, phosphate acetyltransferase; EC 2.7.2.1, acetate kinase; EC 1.2.7.4, carbon-monoxide dehydrogenase (ferredoxin); EC 6.4.1.3, propionyl-CoA carboxylase; EC 5.4.99.22, methyl-malonyl-CoA mutase; EC 2.8.3.9, butyryl-CoA: acetate CoA-transferase; EC 2.7.2.7, butyrate kinase; EC 2.3.1.19, phosphate butyryl-transferase; CON, piglets that were fed a standard corn–soybean meal basal diet; FP, piglets that were fed a basal diet supplemented with 0.20% fermented purslane. All data are presented as means ± SD. *, p < 0.05; **, p < 0.01.