Klandorf H, Harvey S
Comp Biochem Physiol A Comp Physiol. 1985;81(4):865-8. doi: 10.1016/0300-9629(85)90920-x.
The in vivo conversion of thyroxine (T4) to triiodothyronine (T3) has been determined in fed and 24 hr-fasted thyroidectomized cockerels at 4, 7, 13 and 23 weeks of age. The conversion of T4 to T3 in pubertal (13-week-old) and adult (22-week-old) cockerels was greater than that in immature (less than 7-week-old) chicks. The deprivation of food for 24 hr markedly reduced the rate of T4 to T3 conversion, especially in immature chicks. These maturational changes in T4 to T3 conversion may be related to differences in metabolic rate.
已测定4、7、13和23周龄的喂食和禁食24小时的甲状腺切除小公鸡体内甲状腺素（T4）向三碘甲状腺原氨酸（T3）的转化情况。青春期（13周龄）和成年（22周龄）小公鸡中T4向T3的转化率高于未成熟（小于7周龄）雏鸡。禁食24小时显著降低了T4向T3的转化率，尤其是在未成熟雏鸡中。T4向T3转化的这些成熟变化可能与代谢率差异有关。
