One percent sodium bicarbonate increased intake of a 50% silage-50% grain ration, but had no effect on intake of an 84% sorghum silage ration. Adding concentrate (rolled sorghum grain) lowered rumen pH slightly and decreased acid detergent fiber and starch digestion. The bicarbonate had no effect on digestibility, but 2% bentonite lowered digestibility of neutral and acid detergent fiber. Neither compound affected ruminal fermentation characteristics.
K. Jacques, D. Axe, T. Harris, D. Harmon, K. Bolsen.
Effect of sodium bicarbonate and sodium bentonite on digestion and ruminal fermentation of forage sorghum silage-based rations fed to growing steers,
Kansas Agricultural Experiment Station Research Reports,