Endurance.Net Ridecamp Archives

On thehorse.com is an article about "Antioxidants for Exercising Horses" 
(article #4460) and in it they talk about Vit E and Oil supplementation :
*****
Vitamin E
Vitamin E is one of the major dietary antioxidants and the term vitamin E 
actually refers to a group of compounds known as tocopherols. These can be 
found in vegetable oils, an excellent source for vitamin E, but the level and 
type of tocopherol depends on the type of vegetable oil. It has been 
demonstrated that horses might absorb natural sources of vitamin E better than 
synthetic forms. Interestingly, supplementing a horse's diet with vegetable oil 
might actually bring about an increased need for vitamin E. 

"The increased fat oxidation that occurs during sub-maximal exercise following 
fat supplementation is likely to increase the need for antioxidant support, 
particularly vitamin E due to the increased production of reactive oxygen 
species." Dunnett explained. "Although this increased requirement for vitamin E 
may be in part satisfied by the natural tocopherol content of the oil 
concerned, much of this is required to protect the oil itself from oxidation 
(rancidity). Vitamin E supplements are available as powders or liquids."

Dunnett said that human and animal studies suggest that for soya or corn oil, 
120 mg of vitamin E per 100 grams of oil is necessary. This supplementation 
will help maintain the normal antioxidant balance. 
*******

Would this hold true for oils like sunflower oil, which is the more common oil 
fed to horses?

Cheers
Kristene


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