Effect of triiodotyronine on liver glycogen in gallus domesticus

Abstract

The effect of single injections of triiodotyronine (T3) on liver glycogen levels of Gallus domesticus has been studied at the embryonary and postnatal stages. In starved newborn chickens, after the administration of 4 microgram of T3, an important decrease in liver glucogen is observed between 4 and 10 hours after the injection. In a series of experiments following the chicken development, a gradual increase in glycogen can be seen, until the sixth day after eclosion, with the only exception of newborn chickens. T3 has a gradual and significant effect from the 17 th. incubation day onwards producing a decrease in liver glycogen to values lightly inferior to 50% of the control.