HOME HELP CONTACT US 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 Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by KAHL, S. Articles by BITMAN, J. Search for Related Content PubMed Articles by KAHL, S. Articles by BITMAN, J.

Nutrient Utilization Laboratory, ARS, U.S. Department of Agriculture, Animal Physiology & Genetics Institute, Beltsville, Maryland20705, U.S.A.

(Received 23 November 1976)

Plasma thyroxine (T₄) and protein-bound iodine concentrations are raised during the early neonatal period. The beginning of this increase, however, may occur before or immediately after birth (calf: Nathanielsz, 1969a; Hernandez, Etta, Reineke, Oxender & Hafs, 1972; lamb: Nathanielsz, 1969b), within a few hours (human infant: Fisher & Odell, 1969; Simila, Koivisto, Ranta, Leppaluoto, Reinila & Haapalahti, 1975) or several days later (pig: Slebodzinski, 1965; rat: Dussault & Labrie, 1975). After the initial increase, the plasma concentration of T₄declines. Sequential studies of plasma tri-iodothyronine (T₃) after birth and during the early growth period are available for rats (Dussault & Labrie, 1975), human infants (Abuid, Klein, Foley & Larsen, 1974; Erenberg, Phelps, Lam & Fisher, 1974) and lambs (Nathanielsz, Silver & Comline, 1973). Plasma T₃ has been measured in newborn calves