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Does my horse need a vitamin supplement?

By Katherine Blocksdorf, About.com

Question: Does my horse need a vitamin supplement?

Answer: Vitamin deficiencies in horses are rare and many of the vitamins a horse needs it produces within its digestive system. Some people report that the addition of biotin to the horse’s diet increases hoof wall thickness or growth. Overall, a healthy horse getting high quality hay or pasture grass does not need a vitamin supplement.

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