Figure 7

Histological and histopathological alteration of the cecum at 14 dpi. (a) negative control: birds fed basal diet without challenge with S. Typhimurium; (b) positive control: birds fed basal diet and challenged with S. Typhimurium ; (c) birds fed basal diet supplemented with 0.25% thymol, (d) birds fed basal diet supplemented with 0.5% thymol; (e) birds fed basal diet supplemented with 1% thymol; (f) birds fed basal diet supplemented with 0.25% thymol nanoemulsion; (g) birds fed basal diet supplemented with 0.5% thymol nanoemulsion; (h) birds fed basal diet supplemented with 1% thymol nanoemulsion. Inflammatory cells infiltration (arrow), degeneration (curved arrow), hemorrhagic foci and extravasated erythrocytes (red asterisk), hyperplastic enterocytes and active mucosal glands (star), and goblet cells (arrowhead). Stain H&E (magnification, 100 ×).