By Juliet M. Getty, Ph.D. - If you let your horse out to graze on pasture for only a few hours each day, and provide hay the rest of the time, you've likely noticed how he approaches the grass like a vacuum cleaner, barely lifting his head the entire time he is outside.

By Juliet M. Getty, Ph.D. - You’ve just bucked a couple of month’s supply of hay into your barn—or maybe an entire season’s worth—and now it’s time to get acquainted with it. You made sure it was green and attractive, fresh-smelling and free of mold. You’ve stored it under cover and away from the incursion of any damaging moisture. Now you’re ready to find out what it offers your horse in the way of nutritional value.