The abstract for a study testing the effect of enzymes on corn and wheat DDGS. Gas production and carbohydrate fermentation was tested for a diets with the addition of carbohydrate- degrading enzymes (C), C with protease (P), and a control. Gas production was higher for corn DDGS, and the highest with C. VFA was similar, but the highest was corn DDGS control or C. The fibre-starch-protein matrix of corn DDGS was further degraded than wheat DDGS. Digestibility can be improved with carbohydrate-degrading enzymes and is higher for corn DDGS, but adding protease does not improve or actually decreases digestibility.