Effect of Dietary Buffers on Ruminal and Systemic Acidosis of Steers
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چکیده
Rations containing approximately 85% ground high-moisture, ensiled corn were fed to steers in such a way as to produce lactic acid acidosis, and three dietary buffers were evaluated in regard to their effect on ruminal and systemic acidosis. The buffers consisted of (1) 2% sodium bentonite, (2) 1% sodium bentonite plus 1% dolomitic limestone, and (3) 1% sodium bentonite plus 1% potassium bicarbonate (KHCOa). Using ruminal pHs, lactic acid and glucose concentrations as indices of ruminal acidosis, the combination of sodium bentonite and KHCOa was most effective in reducing the degree of ruminal acidosis. The relative changes in the base excess values of blood samples indicated that a combination of either sodium bentonite plus dolomitic limestone or sodium bentonite plus KHCOa was beneficial in enabling the steers to return to a normal acid-base status at 24 hours post-feeding.
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