According to LSU AgCenter equine specialist Neely Walker you should regularly offer clean water to prevent overheating. Horses that are worked in temperatures above 70 degrees can easily consume up to 25 gallons of water a day.
Another way to prevent heat stress is to ensure that barns, paddocks and stalls are properly ventilated. Barn doors and windows can be kept open when safe to allow airflow and fans can be installed to increase air circulation around horses in stalls.
When feeding, owners should pay attention to protein content. Excessive protein can cause additional metabolic heat during the digestion process and xtra body heat makes it more difficult for a horse to cool down.
Crude protein should not exceed 12 to 14 percent of the total ration for a working adult horse. Horses' rations also need salt, 0.5 percent for idle mature horses and 1 percent for working horses daily.
Walker said, "Enjoy riding your horse this summer, but make sure to prepare yourself and your horse properly before attempting the beat the heat. Be aware and take breaks to monitor your horse's physical condition."
Walker advises riding in a covered arena or in the early morning or evening when temperatures are cooler. It is also important to take time to properly cool down horses after riding.
Signs of heat stress include weakness, stumbling, increased respiration and a body temperature in the range of 102 to 106 degrees.
If you suspect heat stress, Walker recommends offering small amounts of water regularly and moving the horse to a shaded, well-ventilated area. If necessary, hose the horse with lukewarm water, starting at the feet and working upward. If the horse's temperature stays above 106 degrees, contact a veterinarian immediately.
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