Evaluation of prediction equations to estimate gross, digestible, and metabolizable energy content of maize dried distillers grains with solubles (DDGS) for swine based on chemical composition

•Cross-validation of GE, DE, and ME prediction equations for corn DDGS.•Equations were compared for variance, reduction in prediction error, and bias.•DE=−2,161+(1.39×GE) − (20.7×NDF) − (49.3×EE) was most precise and accurate.•ME=−261+(1.05×GE) − (7.89×CP)+(2.47×NDF) −(4.99×EE) was best.•These equations are useful to estimate DE and ME of DDGS under practical conditions.