[Modification of blood serum mineral levels and aspartate aminotransferase, leucine aminopeptidase and alkaline phosphatase activity and plasma in glucose levels in healthy cattle by Ca-Mg-containing solutions].

Three high-performance cows in lactation were tested each for the effects of two kinds of infusion each, 500 ml of Tetamag-2 solution (60 g of calcium gluconate and 60 g of magnesium adipate) and 500 ml of Calcimag (100 g of calcium gluconate and 20 g of magnesium adipate), upon the levels of calcium, magnesium, Pa, potassium, and sodium as well as upon the activities of aspartate-aminotransferase, leucine-aminopeptidase, and alkaline phosphatase in blood serum and upon glucose levels in blood plasma. Migration of calcium out of blood plasma was found to take place at much higher rate than that of magnesium. Infusion of Pa and glucose was followed soon by some temporary drop of values. No directional effects were recordable from potassium and sodium. Aspartate-aminotransferase activity did not change in response to transfusion. Intravenous infusion of Tetamag-2 solution caused strong temporary rise in magnesium concentration and, consequently, activation of leucine-aminopeptidase.