
TY  - JOUR
A1  - Maddocks, S 
A1  - Chandrasekhar, Y 
A1  - Setchell, BP 
T1  - Effect on Wool Growth of Thyroxine Replacement in Thyroidectomized Merino Rams
JF  - Australian Journal of Biological Sciences
JO  - Aust. Jnl. Of Bio. Sci.
Y1  - 1985
VL  - 38
IS  - 4
SP  - 405
EP  - 410
KW  - 
UR  - https://doi.org/10.1071/BI9850405 
N2  - The effect on wool growth of thyroidectomy with subsequent thyroxine replacement at subnormal and supranormallevels has been investigated in Merino rams fed a restricted basal diet. Thyroidectomy without thyroxine replacement caused a greater than 60% reduction in wool growth. Provision of 30% of normal plasma thyroxine concentrations was sufficient to return wool growth to normal. Similarly, complete replacement of plasma thyroxine levels gave normal wool growth while increasing thyroxine concentrations to three times normal increased wool growth to levels slightly above normal. These results provide a possible explanation for the inability of other workers to correlate seasonal thyroxine patterns and annual wool growth variations. 
ER  -

