DOMESTIC MAMMAL ADAPTATIONS 



Figure 23 shows a hydraulic model as an analog of animal 

 energy utilization in which the effect of cooling power is coordinated 

 with other effects such as stimulus for milk production and for 

 growth on the regulation of food intake. This was an early sugges- 

 tion (Kleiber, 1936) of the two great regulators of food intake, a 

 chemostatic principle now worked out especially convincingly by 

 J. Mayer (1953) and the thermostatic principle represented es- 

 pecially by Strominger and Brobeck (1953). 



ENERGY IN: 



0~® 



.regulator of appetite 

 lAting capacity 



ABSORPTION capacity 



storage capacity 



heat 



f ^f/^'\ S ) n stimulus FOR GROWTH 



*— MILK ENERGY 



STIMULUS FOR MILK PRODUCTION 



FASTING KATABOLISM REGULATOR 



Figure 23. Scheme of energy- utilization. 

 279 



