Pimentel, L. R.; Marcondes, M. I.; Silva, M. V. da; Siqueira, J. G.; Brahim, M. C. Inclusion of Crude Glycerin in the Diet of Dairy Cows on Intake, Milk Yield and Composition. Semina: Ciênc. Agrár. 2014, 35, 1439-1446.