DIGESTION 



407 



PERCENTAGES DIGESTED. 



Preparation of Food. Cooking, steaming, roasting, etc., de- 

 crease the digestibility of the protein of the food. Grinding is 

 better for hard seeds, or for those which are so small as to be 

 liable to escape mastication, such as flax, barley, sorghum, millet, 

 etc. Horses and hogs masticate food less thoroughly than 

 ruminants, and hence derive more benefit from grinding. 



The following are some American experiments 1 relating to 

 these conditions : 



COEFFICIENTS OF DIGESTIBILITY. 



1 Bulletin No. 77, Office Exp. Sta. 



