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Effects of dietary APS on concentrations of IgG and IgM in sow colostrum. Concentrations of IgG (a) and IgM (b) were measured by ELISA assay. Values are expressed as mean with SD (n = 10 for each group). P values from two-way ANOVA analysis with Duncan's multiple-range test. ∗P < 0.05 and ∗∗P < 0.01.
