Absorption,Excretion and Tissue Distribution of Natural Organic and Inorganic Zinc-65 in the Rat

Abstract

Summary

The absorption and tissue distribution of organic and inorganic forms of ⁶⁵Zn were studied in the rat following single tracer oral doses. Rats dosed with ⁶⁵Zn grown into young corn and rye plants (organic form) absorbed and retained more ⁶⁵Zn in tissues than those given ⁶⁵Zn mixed with tissue paper (inorganic forms). A part of the beneficial effect was evident when ⁶⁵Zn was mixed with forage. The relatively high absorption values indicate that both forms were readily available, and thus incorporating zinc into young forage protein is not of major practical importance.