Antioxidant status
The antioxidant parameters including blood activity of Glutathione peroxidase (GPx) and Superoxide dismutase (SOD) and plasma thiobarbituric acid reactive substances (TBARS) in birds fed TP diets in pre (28 days) and post (42 days) heat stress are shown in Table 5. The activity
of superoxide dismutase (SOD) increased in chicks fed 8 g/kg TP compared to the control diet before heat stress applied, however, the activity of SOD were not affected in heat stressed birds fed TP. The blood activity of Glutathione peroxidase increased when chicks were fed
turmeric powder as compared to the control at pre and post heat stressed birds. Compared to the control groups, chicks fed 4 and 8 g/kg TP had significantly lower plasma concentration of MDA at pre and post heat stress conditions.