Enhancement of Antioxidant Mechanisms and Reduction of Oxidative Stress in Chickens after the Administration of Drinking Water Enriched with Polyphenolic Powder from Olive Mill Waste Waters

Figure 4

Effects on oxidative stress markers: (a) catalase activity (CAT) and (b) GSH in erythrocytes of chickens after treatment for 25 and 45 days with water (group A; control) or water containing polyphenols at 20 μg/ml (group B) or at 50 μg/ml (group C). Significantly different from the value of the control group at the same sampling time (). ^#Significant differences between the values of the same group, measured at different sampling times (). ^¥Significant differences between the values of Β and C groups, measured at the same sampling time ().

(a)

(b)