|SREL Reprint #0124
of Orally Administered Zinc-65 by the Cotton Rat in the Laboratory and Field
Zinc-65 uptake and
excretion by non-starved cotton rats did not differ from levels previously
reported by RICHMOND et al. for the white rat.
Subjects starved before ingestion assimilated less zinc, but excreted it
at the same rate as non-starved subjects. Uptake
levels from solid food and water were similar.
During late fall, subjects in a 2-acre enclosure excreted zinc more
rapidly than laboratory subjects, but no difference between conditions was found
during late winter and spring. It
appeared doubtful that excretion rates were related to activity levels.
SREL Reprint #0124
Orr, H.H. 1967. Excretion of orally administered zinc 65 by the cotton rat in the laboratory and field. Health Physics 13:15-20.