
TY  - JOUR
A1  - Wallace, ALC 
T1  - Variations in Plasma Thyroxine Concentrations Throughout One Year in Penned Sheep on a Uniform Feed Intake
JF  - Australian Journal of Biological Sciences
JO  - Aust. Jnl. Of Bio. Sci.
Y1  - 1979
VL  - 32
IS  - 3
SP  - 371
EP  - 374
KW  - 
UR  - https://doi.org/10.1071/BI9790371 
N2  - Plasma total thyroxine (T 4) concentrations were measured by radioimmunoassay throughout one year in 10 sheep maintained indoors under natural light and consuming a constant amount of feed. Plasma T4 concentrations varied throughout the year, the highest and lowest values occurring in the spring and autumn months respectively. The mean of all observations was 5 ·4±0·1 ,ug/dl. The changes observed did not appear to correlate with changes in ambient temperature, day length or with reported changes in wool growth. 
ER  -

