Effect of maternal SF diet during pregnancy on fecal lipocalin-2 (a) and plasma IL-6 (b), TNF-α (c), IL-10 (d), and TGF-β (e) levels of 14-day-old suckling piglets. Data are presented as means ± SEM (n = 12). *, effect of treatment, (P < 0.05); **, P < 0.01. IL-6, interleukin 6; TNF-α, tumor necrosis factor α; IL-10, interleukin 10; TGF-β, transforming growth factor β.