FUNCTIONS OF THE NUTRIENTS 



175 



TABLE XXXV 



257. Difference in total energy use with different 

 rations. Zuntz and Hagemann determined the oxygen 

 use and carbon dioxid excretion during an exclusive hay 

 diet as compared with a diet of mixed hay and grain. 



TABLE XXXVI 



The comparison of the energy use for the consump- 

 tion of the exclusive hay ration and hay-and-grain ration 

 shows that the latter, carrying 5,697 grams of digesti- 



