| Popis: |
THE liquid phase of the intestinal contents is important nutritionally because it is the fraction from which absorption takes place. Since this is in intimate contact with a solid phase composed of undigested feed residues, the question arose as to what effect an excess of mineral might have upon its normal composition. A study was made, therefore, of the partition of Ca and P between the liquid and solid phases of the intestinal contents of chicks fed rations adequate in Ca and P and those containing an excess of oyster shell or bone meal. Preliminary experiments were also conducted in vitro with simple systems to ascertain the nature of the effects produced. EXPERIMENTS IN VITRO Procedure Varying amounts of oyster shell, c.p. CaCO3, bone meal, or c.p. Ca3(PO4)2 (all through 300 mesh sieve) were shaken for three hours at 38°C. with a solution of Ca and P made by dissolving . . . |
