Absorption and Dissimilation of Lactates Added to the Bovine Rumen and the Resulting Effects on Blood Glucose

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Abstract
Dissimilation studies were conducted with fistulated cows using various forms of lactates as the substrates. Both calcium lactate and sodium lactate caused appreciable increases in rumen propionic acid concentrations. Only sodium lactate caused marked increases in blood lactic acid and blood glucose, indicating the increase in blood glucose was due primarily to absorption of lactic acid from the more soluble lactate and not from absorption of propionic acid. Addition of calcium lacto-bionate to calciumllactate did not alter the effect of calcium lactate on blood lactic acid or blood glucose levels.