Compared with ducks fed the riboflavin-supplemented diets, ducks fed the riboflavindeficient
basal diet had greatest plasma malonaldhyde (MDA; linear and quadratic,
Po0.005) and liver MDA (linear, P¼0.06; quadratic, P¼0.001) and lower superoxide
dismutase activity in plasma (linear, P¼0.027; quadratic, Po0.001) or liver (linear,
P¼0.008; quadratic, P¼0.093).