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Alpha diversity. Alpha diversity indexes of PD (phylogenetic diversity) whole tree in rats fed test diets containing barley products or a control diet. Groups with different letters are significantly different. (TM, tipple malt; CM, cinnamon malt; SM, standard malt; BSG, brewers’ spent grain; Mix, mixture of TM and BSG 70:30; AX, arabinoxylan extract; BG, β‐glucan extract; CTRL, free‐fiber control).
