Fig. 2
Overview of environmentally induced oxidative stress in swine. A At mid gestation, heat stress causes the placental inefficiency of sows. At late gestation and farrowing, heat stress causes the decrease of antioxidant capacity, which prolong the delivery time of sows. B At lactation, the decrease of antioxidant capacity causes the decreased lactating performance of sows and further reducing the offspring performance. C Heat stress could lead to oxidative stress in skeletal muscle of growing pigs. D The thermoneutral zone and levels of oxidative indictors for pigs at different stage. E Cold stress could cause the increased diarrhea incidence of neonatal piglets. SOD: superoxide dismutase; Gpx: glutathione peroxidase; CAT: catalase; T-AOC: total antioxidant capacity; MDA: malondialdehyde; H2O2: hydrogen peroxide; ROS: reactive oxygen species. The data in figure are come from the references [20,21,22,23,24,25,26,27,28,29,30,31]