[Age and changes in the activity of amylase isoenzymes in duck tissues].

Dynamics of the total activity of genetic amylase systems was studied in ontogenesis of 102 Pekin ducks of different generations. Regularities are described showing the dependence of the detected changes on the growth rate of animals. The equations presented permit determining the amylolytic activity which is necessary to support the physiological regeneration and the growth rate. The time and quantity dependences are shown for changes in the amylase system activity in organs and blood with an increase in the live mass and mass of organs. Issuing from the data presented, possible mechanism of the organism growth control is discussed.