Key Points Alkalosis, hypochloraemia, hypokalaemia, and hyponatremia are commonly seen in severly dehydrated cattle, and are associated with mortality Sodium is included in SELEKT ROLITES to retain water in the extracellular-fluid compartment. Alkalosis is the more common acid base disturbance observed in dehyrdated cows. SELEKT ROLITES contains sodium chloride to correct chloride-depletion alkalosis. Potassium chloride is included to correct hypokalaemia and help correct alkalosis Calcium and magnesium are included at physiological concentrations to prevent further dilution of these electrolytes in the rehydrated cow. Dextrose (glucose) is included to make it palatable. After rapid rehydration by pump drenching, rehydration can be continued by allowin the cow to drink a solution of SELEKT ROLITES of her own accord To be administerd in 20L lukewarm water.