Gypsy, the Equine Encyclopedia, has something to say about why vitamin E is essential to horses. Like all shetlands, she is always watching, listening and eating.
Horses use vitamin E in many different ways. Vitamin E enhances horses’ immune systems and helps maintain normal cell function. In addition, vitamin E helps horses with the absorption of vitamin A and works as an antioxidant to prevent damage to cells.
Horses get vitamin E from green pasture and vitamin supplements. Microbes in the horse’s digestive system produce a small amount of this vitamin but it is by no means enough.
Lack of sufficient vitamin E creates many ill effects in the horse, including muscle wasting, decreased immunity and slowed growing in foals.