Intestinal Absorption of Zinc or Calcium-Ethylenediaminetetraacetic Acid Complexes in Chickens

Abstract

Summary Carbon-14 and zinc-65 or cal-cium-45 appeared in the blood perfusing an isolated segment of the small intestines of chickens following placement of EDTA-2-C¹⁴ complexed with Zn⁶⁵ and Ca⁴⁵ in the lumen. The lumen tended to adsorb the zinc from its complex but not calcium. An efflux of 2.7 μM/hr cm was observed for calcium-45. The values for zinc-65 varied from 0.2-0.6 μM/hr cm.