Figure 8

Histological and histopathological alteration of the liver at 14 days post-infection. (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. Focal leukocytic infiltration (circle), hydropic degeneration (arrow), vacuolation (arrow head), dilated hepatic blood vessels (red asterisk), and perivascular or interstitial leukocytic infiltration (arrows). Stain H&E (magnification, 400 ×).