a b s t r a c t
Depression of meat quality is known to be caused by lipid peroxidation occurring in meat. Supplementation
of antioxidants in feed decreases lipid peroxidation and improves the oxidative stability of meat
after slaughtering. The present study demonstrated that meat obtained from broiler birds fed feed
supplemented with a-tocopherol acetate (200 mg/kg feed) along with a-lipoic acid (25, 75, or 150 mg/
kg feed) exhibited increased oxidative stability and reduced fat content. The total phenolic content and
a-lipoic acid content increased in the meat as the concentration of a-lipoic acid supplementation
increased. The protein content in the meat was not changed by the supplementation of a-lipoic acid
and a-tocopherol acetate. The results of DPPH and TBA assays demonstrated that feed supplemented
with a-lipoic acid and a-tocopherol acetate also enhanced the antioxidant activity of broiler meat. On
the other hand, the meat from broiler birds fed feed supplemented with oxidised oil (4% in feed) reduced
its oxidative stability