Figure 1.

The sections of the duodenum, jejunum, and ileum showing villus height in control group and the birds supplemented with different organic acids. Hematoxylin and eosin staining. Scale bars represent 260 μm.Villus height in the duodenum of broiler chicken in control group (a) and 3% butyric acid group (b). Villus height in the jejunum of broiler chicken in control group (c) and 3% fumaric acid group (d). Villus height in the ileum of broiler chicken in control group (e) and 2% fumaric acid group (f).