CHANGES IN BLOOD IONIZED CALCIUM AND SOME OTHER BLOOD PARAMETERS BEFORE AND AFTER REPLACEMENT OF A LEFT-SIDED DISPLACED ABOMASUM IN DAIRY-CATTLE

Concentrations in ionized calcium and some other blood parameters incl uding total calcium, magnesium, inorganic phosphate, sodium, potassium , chloride, acid-base and hematological parameters of 15 German Holste in dairy cows were studied before and after surgical replacement of a left sided displaced abomasum. Mild hemoconcentration and hypochloremi a were characteristic findings. These parameters tended to become norm al within a few days after surgery. Hypocalcemia and low plasma potass ium levels were not characteristic in this study, suggesting that hypo calcemia does not play an important role in the initiation of LDA. It can be supposed from this study that the severity of pathological bloo d findings depends more on the rate of malfunction of the abomasum tha n on the length of existence of LDA.