Avian Antioxidants and Oxidative Stress: Highlights from Studies of Food, Physiology, and Feathers

摘要: As generally fast-moving animals with high metabolic rates, birds have been the subject of many studies oxidative balance. For a given lifespan and body size, tend to experience less stress than other comparable endothermic such as mammals, due at least in part superior antioxidant machinery. Here, recent research is reviewed, emphases on avian antioxidants context life-history evolution, paying special attention oxidant balance it relates growth, reproduction, aging. Dietary carotenoids can enhance these features both free-ranging domesticated species, but patterns are not clear for tocopherol intake. Studies endogenous hormones (e.g., melatonin) enzymes superoxide dismutase) much more limited, fewer wild birds, some systems sperm, aorta) species molecules offer strong defense from damage nutritional state, toxin exposure. Uric acid glutathione also emerged focal track, alongside general assays “total capacity”. More encouraged that comanipulate supplies/actions, better understand interactions coevolution biological processes.