High Energy Corn Gluten Feed

Corn gluten feed is the by-product of the wet-milling of maize grain for starch (or ethanol) production (Hoffman et al., 2010). Corn gluten feed consists mainly of maize bran and maize steep liquor (liquid separated after steeping) but may also contain distillers solubles, germ meal, cracked maize screenings, as well as minor quantities of end-products from other microbial fermentations (Stock et al., 1999). The chemical composition of corn gluten feed varies hugely, as it depends on the milling process and on the relative proportions of bran, steep liquor and other components. Particularly, the energy and protein content of corn gluten feed are positively correlated to the proportion of steep liquor in the blend.