[Heat production in the early stages of axolotl growth according to direct and indirect calorimetry findings].

The level of energetic metabolism of the growing axolotls was studied by the methods of direct and indirect calorimetry. Just after the hatching the heat production of the larvae calculated by the gas exchange exceeds markedly the level of heat production measured by the calorimeter. During the subsequent growth the level of heat production changes as a transitional process, so that therafter indirect calorimetry gives constantly higher values of energetic metabolism than direct one.