One of the challenges of using corn DDGS in animal feeds is to know the nutrient content and
digestibility of the source being fed. Several studies have described variability in nutrient
content and digestibility for various animal species (Spiehs et al., 2002; Tjardes and Wright,
2002; Waldroup et al., 2007; Stein and Shurson, 2009) and it is well documented that the
nutrient content of corn DDGS can vary among U.S. DDGS sources (Table 1), and has been
shown to vary over time within plants (Spiehs et al., 2002).