Horses on productive pastures tend to exercise naturally as they graze. When green pasture dwindles, however, horses tend to exercise less and instead wait in the shade for feeding time, which could put them at risk for colic. | Photo: Photos.com

Several areas of the country, such as California, are currently experiencing drought. Abnormally dry conditions pose unique health care and management challenges for horse owners.

Pasture

Horses on productive pastures tend to exercise naturally as they graze; this constant moving and foraging is beneficial for their digestive health. When green pasture dwindles, however, horses tend to exercise less and instead wait in the shade for feeding time. These horses are more inclined to have gastrointestinal problems that can lead to colic. Thus, under these conditions I recommend feeding horses a generous amount of a bland (such as long-stem) grass hay to keep them eating and occupied during the day. This is preferable to having them wait around for an occasional rich feeding. When moisture finally returns, it is important to moderate horses’ access to rapidly changing pasture, so their systems can readjust to green grass.

Hay

Drought conditions also reduce hay supplies, making it difficult for owners to maintain consistent hay diets for their horses. Radically changing feed types increase a horse’s risk for health problems, especially colic. If you can’t maintain a consistent hay type, source, and quality, gradually reduce the amount of the old batch you feed, mixing it with an increasing amount of the new hay (over three to five days) to ease the transition. When purchasing hay from a new source, always examine it carefully for mold, dust, weeds, blister beetles, and sharp seed awns. While feed concentrates can supplement horses’ diets in some cases, they should not replace hay (high fiber or roughage feeds). Hay should be the staple of the equine