Supplementing Salt- Summer and Winter

By MaryKay Ruble
Salt is a necessary mineral to every living being on our earth, including our horses. A horse deficient in salt may chew wood, trees, stalls and fencing, and may lick dirt and other objects in its search for sodium. A young horse whose diet is lacking sufficient salt may not reach its full growth potential. These horses may also appear rough coated, and suffer from fatigue and lethargy, a salt-deficient lactating mare may produce less milk
Horses can tolerate a slightly higher level of salt in their diets as long as fresh water is available and plentiful. However care must be taken in the case of salt-starved horses that too much salt not be added to their diets too quickly.
Several years ago, researchers in Michigan measured equine free-choice daily salt consumption during their warm weather months of May thru August. The earliest and lowest consumption level was recorded as 0.64 ounces, with 3.18 ounces being consumed by August.
Most owners realize that salt levels are depleted during heavy workouts and exercise as the animal sweats, which occurs during times of warm weather. However, the supplementing of salt during winter months can also serve a healthful purpose. One to two tablespoons of salt sprinkled once a day over a grain or pellet ration can entice reluctant drinkers to consume more water at a time of the year when some horses will self-reduce their water intake. Along with any added salt, be sure to keep a supply of potable water available.