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Predominance of bacterial genera present in the cecal microbiota of broilers at 21 d of age fed diets containing different enzymatic association. The nonitalicized groups represent bacteria that were identified to order or family level. Abbreviations: NC, negative control; NCA, negative control + amylase; NCAX, negative control + amylase + xylanase; NCAXP, negative control + amylase + xylanase + protease; PC, positive control.
