Fig. 6

Alterations of cecal and fecal SCFA levels induced by dietary copper and fructose. a Total SCFA levels. b SCFA levels (C2–C4). c Percentage of total SCFAs. Data represent means ± SD (n = 7–8). Statistical significance was set at p ≤ 0.05. P values displayed are for the factors copper (Cu), fructose (F), and interaction (Cu × F) by two-way ANOVA with Tukey’s multiple comparisons test. * versus CuA; ^# versus CuAF; ^$ versus CuM. Cu, copper; A, adequate copper diet; AF, adequate copper diet +10% fructose (w/v) in the drinking water; M, marginal copper diet; MF, marginal copper diet +10% fructose (w/v) in the drinking water. C2, acetic acid; C3, propionic acid; C4, butyric acid