TOXIC EFFECTS OF EXCESS CALCIUM THERAPY IN A POST-PARTURIENT COW

摘要

Milk fever, the clinical manifestation of parturient hypocalcaemia, is a disease of considerable importance for dairy cow welfare and economy (Hansen et di, 2002). Treatment with intravenous infusion of calcium salt solution cures most clinical casesof hypocalcaemia. Such cows are later more susceptible to other metabolic and infectious diseases (Curtis et a/., 1984). Prevention of parturient hypocalcaemia is therefore given a great importance. It has been proposed that a specific control program isrelevant when the incidence of milk fever increases to above 10% among high-risk cows i.e. cows entering third or later lactations (Radostits et ai, 2000). Sometimes irrational treatment of milk fever with calcium salts leads to calcium toxicity. The present case dealt with the toxic effect of irrational calcium therapy.