the average rations fed contained the amounts of digestible protein 

 and of available energy shown in the following table : 



Table 7. Summary of Average Daily Rations Per Head. 



If we subtract from the available energy of the foregoing rations 

 as thus computed the amount required for the maintenance of the 

 animal, the remainder should correspond to the gain of energy by 

 the animal. The results of this computation are contained in the 

 following table : 



Table 8. Energy Content of Gain in Live Weight. 



The data of Table 8 show that with the exception of the last 

 period, in which the true gain of weight is somewhat uncertain, the 



* Average of initial and final weights for the period corresponding most 

 nearly to the feeding period. 



** Initial weight in this period is from a single weighing. 



(17) 



