Summary and Implications
Heat damaged grain, if not completely destroyed by fire, takes on a roasted appearance ranging from a slight brownish tint to black. This grain can be salvaged and used in cattle rations. The color can be used to determine relative digestibility and available energy in the diets of cattle.
Iowa State University
Dahlke, Garland R. and Drewnoski, Mary
"The Feeding Value of Heat Damaged Corn Grain in Cattle Diets,"
Animal Industry Report:
AS 657, ASL R2591.
Available at: http://lib.dr.iastate.edu/ans_air/vol657/iss1/15