Metabolism of inorganic cations by quail (Coturnix Coturnix) drinking solutions of CaCl2 and MgCl2

Abstract

1. 1. In experiments to indicate the abilities of birds to tolerate and excrete Mg and Ca in drinking water, twenty-eight male quail received solutions of CaCl2 or MgCl2 perenterally for several days or in single doses. The concentrations of Ca, Mg, Na and K were subsequently measured in excretory fluids voided spontaneously or collected by intubating cloaca and rectum, and in plasma.2. 2. The physiological mechanisms of quail which deal with divalent cations are affected similarly by both Ca and Mg, without distinguishing sharply between the two.3. 3. Calcium appears to be less readily absorbed in the gut than Mg.4. 4. Excretion of Na is increased by intake of CaCl2 or MgCl2.5. 5. Water appears to be absorbed from ureteral urine in cloaca or rectum.6. 6. The effects of CaCl2 and MgCl2 on salt metabolism of the quail are complex.