DIETARY FACTORS INFLUENCING UPON THE RETENTION RATE OF ORALLY ADMINISTERED ^115mCdC_l2 IN MICE

WITH SPECIAL REFERENCE TO CALCIUM AND PROTEIN CONCENTRATIONS IN DIET

Abstract

Retention rate of cadmium was estimated with mice when administered a single oral dose of ^115mCdC_l2, and dietary factors influencing upon it were examined. High protein diet lowered the retention rate, while calcium and/or phosphorus contents of diet had no effect after 24 hours' feeding of experimental diet. After 10 days' feeding of experi-mental diet, calcium contents gave no statistically significant difference in the reten-tion rate in carcass of orally administered cadmium, but a larger amount of cadmium was retained in the digestive canals and their contents in mice kept on low calcium diet than on high calcium one at 24 and 72 hours after cadmium administration.