People trucking and handling animals need to understand both wind chill factors and heat stress. Wind chill can kill livestock. Wetting the haircoat on cattle destroys its ability to insulate the animal's body. Death losses in cattle are often greatest when the temperatures are near freezing and either rain or freezing rain blows into a truck. Dry, cold weather is less hazardous to cattle because the coat retains its ability to insulate.
Wind chill can make the back of a trailer very cold.
The combination of high temperature and humidity is especially detrimental for pigs. When the Livestock Weather Safety Index is in the Danger and Emergency zone, try to schedule pig shipments for the early morning. If this is not possible, trucks should be kept moving and drivers should not be allowed to stop at the coffee shop with a loaded trailer. When the trucks reach the plant, they must be unloaded promptly. Truck with ventilation holes open for transporting pigs during hot weather.