Relative expression of chAng4 in the gastrointestinal tract of broiler chickens supplemented with a combination of probiotics and organic acids, on day 11. T1 = birds that did not receive the blend of probiotics and organic acids; T2 = birds that received the blend of probiotics and organic acids for 7 D; and T3 = birds that received the blend of probiotics and organic acids for 14 D. chAng4 gene expression was normalized to that of the housekeeping gene. Bars represent means ± SEM (n = 15). Abbreviations: Prov, proventriculus; Duod, duodenum; Ile, ileum; Jej, jejunum; Cec, cecum.