Intestinal epithelial cell markers mRNA expression of birds fed with control or supplemented diet. At d 21 of age, gene expressions in jejunum (A), ileum (B), and cecum (C). Difference between 2 groups at each growth period was labeled. * indicates significant difference (P ≤ 0.05). # indicates trend difference (0.05 < P ≤ 0.1). Dietary treatments were as follows: Con, basal diet; OA+B, basal diet + 500 ppm encapsulated organic acids and botanicals. Abbreviations: CHGA, chromogranin A; LGR5, leucine-rich repeat-containing G-protein coupled receptor 5; LYZ, lysozyme; MUC2, mucin 2; SOX9, SRY-box transcription factor 9.