Metabolic rates, as measured by oxygen consumption and air cell temperatures, increased significantly (P<.01) as pipping and hatching occurred in turkey embryos. Increased metabolic rates were accompanied by significant (P<.01) increases in both circulating plasma thyroxine (T4 ) and triiodothyronine (T3) concentrations. Both T3 and T4 plasma concentrations declined significantly (P<.01) as the poult emerged from the shell, but the T3 /T4 ratio increased.
No takes yet. Share an insight, caveat, or question.
Christensen et al. (1982) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: