effects of grape seed powder on productive performance, lipid profile and total bacteria in duodenum and ceca of broiler chickens

Intensive broiler production exposed the birds to several stressors, such as environmental factors, crowding and vaccination. however, when free radical is higher than physiological tolerance cause oxidative stress. this study aimed to investigate the effect of supplementing different levels of grape seed powder to a broiler diet on productive performance, lipid profile and bacterial count of the duodenum and cecum. a total of 180 unsexed one-day-old broiler chicks (ross 308). birds were randomly distributed to four dietary treatments (three replicates/treatment, 15 chicks/pen). t1: (control) without addition, t2, t3, and t4, (1, 2, 3) % grape seed powder /kg diet, respectively. results indicated that final body (42 days of age) and accumulative weight gain, and feed conversion ratio were significantly (p<0.05) better in t2 and t3 (2 and 3) % grape seed powder/kg diet. blood glucose concentration, cholesterol, triglyceride, ldl, and mda were significantly (p<0.05) decreased in t3 and t4 compared with other groups. while there were significant (p<0.05) increases in hdl and glutathione peroxidase in t3 and t4. there was a significant (p<0.05) decrease in total aerobic bacteria and clone bacteria and a significant increase (p<0.05) in lactobacillus of duodenum and ceca for t3 and t4, respectively. it could be concluded from this study that adding grape seed powder at levels of (2 and 3) % has beneficial effects on productive performance, lipid profile and microbial count of duodenum and ceca.