An efficient treatment of primary ketosis in dairy cows consists in the replacement of glucose deficiencies by a direct intravenous administration of glucose at a dosis of 0.5 g/kg bodyweight. Frequently, however, this treatment doesn't suffice to fill up to total glucose deficit of the body. The reason for this may be twofold: first it is possible that the total body glucose debt is higher than 0.5 g/kg bodyweight and secondly it has been shown that great urinary losses take place after fast intravenous infusions of glucose. The aim of the present investigation was to check the efficiency of an intraperitoneal infusion of glucose at a dose rate of 1 g/kg bodyweight. The results show that this treatment gives rise to smaller urinary glucose losses and faster replenishment of the glucose body debt.