With the presence of global warming, heat stress is becoming a key stressor influencing animal health and growth, especially during the summer months. The intestinal mucosa of the pig presents an extensive surface area providing direct contact between the pig and a large assortment of nutrients, microbes and exogenous toxins. The intestinal epithelium should permit the exchange of nutrients between the gut lumen and the systemic circulation, while at the same time preventing penetration of pathogeni...