April 2013 Articles

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Help Your Horse Beat the Heat this Summer

Help Your Horse Beat the Heat this Summer High heat and humidity can require horse owners to make changes to their management strategies when caring for horses during the summer. During hot weather, horses are vulnerable to heat or thermal stress. Since horses cool themselves primarily by sweating, there is an increased need for water and mineral intake during the summer. If horses do not have access to water, they risk becoming dehydrated, which can lead to more severe problems such as decreased performance, shock, and even death.

Water Needs for Horses Factors that change water consumption:
pregnancy
lactation
work
profuse sweating
environmental temperature.
Pregnant mares require about 10 percent more water than nonpregnant mares. Lactating mares require 50 to 70 percent additional water to replace the water used in milk production. The water requirement for horses subjected to hard work will double due to water lost through sweat and respiration. Increases in ambient temperature will also cause the horse's water requirement to double. Before and during prolonged exercise, horses should be encouraged to consume as much water as possible to prevent dehydration. Following exercise, horses should be cooled down before drinking or have free access to water. Water consumed in large amounts by a hot horse after exercise can lead to colic, laminitis, or founder.
Automatic horse water bowls are useful because they provide a constant supply of water and decrease labor costs. Frequent cleaning of water buckets prevents horses from ingesting anything that may have fallen into them, such as feces. Cleaning also prevents algae or bacteria buildup on the walls of the bucket. Water temperature should range between 45° to 65ºF (7° to 18ºC), because horses will be reluctant to drink water that is too hot or too cold. In the winter, outside water should be checked regularly to make sure that it is not frozen. If horses are housed in box stalls, small water heaters may be used to prevent water from freezing. Source: LSU AgCenter