HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Miller, J. K. Articles by Cragle, R. G. Search for Related Content PubMed PubMed Citation Articles by Miller, J. K. Articles by Cragle, R. G.

Iodine Transfer and Concentration in the Prepartum Cow, Fetus, and Neonatal Calf¹

University of Tennessee Agricultural Research Laboratory, Oak Ridge²

ABSTRACT

Information regarding iodine transfer from dam to fetus has been obtained with 21 cows. Iodine concentration in the circulation of the fetus was observed to be over five times that found in the dam's plasma. Amnionic fluid contained more iodine than fetal plasma, but chorionic fluid iodine concentration was midway between maternal and fetal plasma. The inability of the fetus to excrete iodine in urine may be a major factor in the high calf/dam ratios of iodine at birth. After birth the disappearance rate of nonbound iodine from the calf exceeded that from the cow in the first two days after dosing. Percentage of the dose retained by thyroids and total radioiodine changes in plasma from birth or day of dosing were similar in dams and calves.

¹ This manuscript is published with permission of the Director of the University of Tennessee Agricultural Experiment Station, Knoxville.

² Metabolism and Radiation Laboratory, State University Station, Fargo, North Dakota.

³ Operated by the Tennessee Agricultural Experiment Station for the U. S. Atomic Energy Commission under Contract no. AT-40-1-GEN-242.