Acid base equilibrium in experimental acidosis of cows with and without rumen fistula.

Acid base equilibrium in experimental acidosis of cows with and without rumen fistula. Acta Physiol. Pol., 1977, 28, (1): 77-84. Symptoms of acidosis caused by administration of saccharose into the rumen were more significant and lasted longer in the cows without rumen fistula than in those with it. At the peak of acidosis of pH of arterial blood was 7.29 and it was by 0.07 below that in the group of cows with fistula. The alkali reserve was lower by 6 mEq and the bicarbonate level by 5.2. Characteristic differences were observed in oxygen utilization and nitrogen metabolism. Thus, the results obtained in experiments on the cows with rumen fistula do not reflect the normal metabolic processes.