Summary and Implications
Heat damaged grain including distillers grain does have a salvage value as animal feed. The value of this material can be partially assessed by the visual appearance with darker or more burnt grain being of lesser value than the lighter colored.
Iowa State University
Dahlke, Garland R.
"The Feeding Value of Heat Damaged Distillers Grains in Cattle Diets,"
Animal Industry Report:
AS 659, ASL R2768.
Available at: https://lib.dr.iastate.edu/ans_air/vol659/iss1/19