This experiment was conducted to study the effects of maternal dietary DL-selenomethionine on meat quality of progenies of broiler breeders and to investigate its mechanism through selenium(Se) deposition,antioxidant capacity,histological morphology and gene expression of glutathione peroxidase(GSH-Px) in muscle.A total of 240 Lingnan yellow broiler breeders of 39 weeks of age were randomly allocated to 2 groups,each group contained 3 replicates of 40 birds.Chickens in two groups were fed the same basal die...