Ileal viscosity (cP) for broilers fed a control (CTRL) and a 0.50% arabinoxylan-oligosaccharides supplemented (AXOS) wheat-based diet at 5 different broiler ages (day 10, 15, 21, 28, and 35). In I and II, the main effect of diet and broiler age is illustrated, respectively. Differing small letters a and b indicate a significant difference in ileal viscosity between dietary treatments (I) and broiler ages (II) (P < 0.05). Arrows indicate a different decline in ileal viscosity means for broilers fed a CTRL and an AXOS diet at one particular age (III).