Do feeds have adequate amounts of vitamin E?
Current research indicates that stored feeds do not contain adequate amounts of vitamin E to meet the animals’ requirements. Supplemental vitamin E is required in all rations that contain dry hay, silage, greenfeed, and swath grazing. Vitamin levels in any stored feed decreases with time. The fermentation process involved with making silage destroys most of the vitamins. Fresh growing forages have adequate amounts of vitamin E.