Öz A study was conducted to evaluate the changes in serum biochemical and lipid profile, and fatty acid composition of breast meat of broiler chickens fed supplemental grape seed extract GSE . A total of 240 1-day-old male broiler chickens were randomly allocated to 4 groups, each consisting of 4 replicate pens having 15 birds/replicate pen. One group served as control group fed basal diets and other groups received 100, 200, and 400 ppm GSE supplemented to the basal diets. Liver weight was greater in broilers fed 200 ppm GSE compared to the other groups P = 0.004, L = 0.024, C = 0.010 . Serum AST and ALT levels decreased P < 0.001 whereas ALP levels increased with increasing dietary GSE levels P < 0.001 . Serum albumin and total protein levels were lower in control in comparison with other groups P < 0.001 . Serum cholesterol, triglyceride, and LDL levels declined P < 0.001 while HDL levels increased with increasing supplemental GSE levels P < 0.001 . MUFA levels were greater in breast meat of broiler chickens fed diets supplemented with 100 ppm GSE. On the other hand, PUFA including n-3 and n-6 were greater in broiler chickens fed control diets or 400 ppm GSE supplemented diets. In general, essential fatty acids such as α-linolenic acid n-3 C18:3 , arachidonic acid n-6 C20:4 , eicosapentaenoic acid n-3 C20:5 , and docosahexaenoic acid n-3 C22:6 were greater in breast meat of broiler chickens fed supplemental GSE 100, 200, or 400 ppm while overall UFA concentration in breast meat remained unaffected. In conclusion, findings of this study suggest that dietary supplementation of up to 400 ppm GSE in broilers may improve serum biochemical and lipid profile. It may also improve the fatty acid composition of breast meat to varying extent despite no effect on overall UFA concentration.
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