Horses would definitely eat dried distillers grains with soluble(DDGS) but equine researchers say they shouldn't.Kansas State University's Teresa Slough, an equine nutritionist says that DDGS need more testing for fumonisin. Death for a horse which has eaten DDGS contaminated with fumonisn will be inevitable even if fed for just once like what happens when they eat moldy corn. More details on the link below
Link: AG Weekly Online -- Twin Falls, Idaho