75 



horses at severe work 1.12 pounds digestible protein and 19.560 calo- 

 ries. It is believed that these last values do not come as near repre^ 

 senting a general average as the others, since the}' are based on a 

 comparatively limited amount of data, and possibly the pace at which 

 the work was performed may he responsible in a measure for the 

 comparativeh' small amounts of nutrients and energ}'. Generally 

 speaking, all these average values are less than those called for by the 

 commonly accepted German feeding standards for horses perform- 

 ing the same amounts of work, yet from what is known regarding the 

 American horses it seems fair to say that they were well fed. 



Additioiial experiments are much needed which will result in a series 

 of standards suited to American conditions. 



Generally speaking, horses digest their feed, and especially the 

 nitrogen -free extract and crude liber in it, less thoroughly than 

 ruminants. 



The general deductions which have been drawn for horses apply 

 with equal force to other animals of the same group, such as asses 

 and mules. 



O 



