Linear discriminant analysis (LDA) effect size (LEfSe) analysis of cecal microbiota. LDA scores generated for the differentially abundant microbiota (LDA > 2, P < 0.05). Abbreviations: ANT, basal diet supplemented with 500 mg/kg terramycin calcium; APS, basal diet supplemented with 300 mg/kg Astragalus membranaceus polysaccharides; CON, control group with basal diet; GPS, basal diet supplemented with 150 mg/kg Glycyrrhiza uralensis polysaccharides.