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The control (CON) grain sorghum hybrid AWheatland x RTx430 and its near-isogenic brown midrib counterpart (BRM) containing the gene bmr-12, were used in a 72-day residue grazing experiment. Grain yield averaged 119 bu/ac and was not affected by treatment. ADG was increased from 0.75 lb in CON to 1.23 lb in BMR treatments over the grazing period. NDF digestibility increased 6%-12% units in leaf fractions in BMR over CON. NDF digestibility decreased 2%-12% units over the 72-day grazing period for both hybrids. Similarly, NDF digestibility of stem fraction increased 14%-19% units in BMR over CON. NDF digestibility of the stem fractions remained constant, regardless of treatment, over time.