Vitamin D and Sunshine for Your Horse

Sunshine and Vitamin D are just as important to horses as they are to humans. Also, sun-cured forages contain vitamin D. If a horse is not exposed to the sun, or is fed poor-quality hay, a vitamin D deficiency could occur.
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Sunshine and Vitamin D are just as important to horses as they are to humans. Also, sun-cured forages contain vitamin D. If a horse is not exposed to the sun, or is fed poor-quality hay, a vitamin D deficiency could occur.
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According to Ohio State University Equine Extension, vitamin D is called the sunshine vitamin because the ultraviolet rays of the sun convert a compound in the skin into vitamin D. Horses exposed to four to six hours of outdoor light (even on cloudy days) will make sufficient vitamin D. Also, sun-cured forages contain vitamin D. If a horse is not exposed to the sun, or is fed poor-quality hay, a vitamin D deficiency could occur.