When Your Horse is at His Best, You Are too. 
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Lessons from the Farm

What we’ve learned can help you care for your horses and return the happiness they bring you.

Information from Our Horse Experts

Animal experts at the Purina Animal Nutrition Center share their knowledge about horses.

What determines how much a horse should be fed?
In order to feed the correct amount to a horse, the owner must know the horse's body weight. To determine body weight, one can use a livestock scale, a weight tape (such as those available through Purina Dealers) or an equation, such as: BW (lbs.) = Heartgirth (in.) x Heartgirth (in.) x Body length (in.) divided by 330. (The heartgirth is measured as the circumference over the withers and around the barrel; the body length is measured from the point of the shoulder to the point of the buttocks.) Once the horse's body weight is determined, then the owner should use the guidelines on the bag of feed or the feeding calculator found on the Purina website ( to calculate how many pounds of feed and hay to feed each horse.

Video Lessons from the Farm

Learn more horse feeding and caring tips from our Purina Nutrition Experts.

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