FORTY-SECOND ANNUAL CONVENTION 249 



grain ration. In order to lighten up this grain, the cob is often 

 ground with the kernel, the resulting meal being called corn-and- 

 cob meal. This feed is more bulky and better adapted for mix- 

 ing with heavy grains. 



Oats (Ground). 



Digestible nutrients — Protein, 9.4 per cent; carbohydrates and fat, 

 60.6 per cent. 



This very palatable cereal is slightly laxative and very well 

 adapted for feeding dairy cattle. Owing to the high market price 

 of oats, it is usually more economical to sell them and purchase 

 other feeds which furnish nutrients at a cheaper price. 



Barley (Ground). 



Digestible nutrients — Protein, 9 per cent; carbohydrates and fat, 



70.4 per cent. 



This is a palatable feed and one that can be used to good 

 advantag'e as a source of carbohydrates or energy material for 

 dairy cows where its price is moderate. Like corn, it should not 

 be the only grain in the ration. 



Rye (Ground). 



Digestible nutrients — Protein, 9.2 per cent; carbohydrates and fat. 



70.5 per cent. 



This grain is not especially palatable and should not be used 

 in large quantities, as it tends to produce a hard, tallowy butter. 

 Mixed with other feeds, it is often a valuable addition to the 

 ration. 



Roughage. 



All roughage may be divided for convenience into two gen- 

 eral classes with reference to its content of protein. In the first 

 or low protein class are placed corn silage, corn stover, timothy 

 hay, millet hay, prairie hay, hays from the common grasses, 

 straws of the various cereals, and cottonseed hulls. The second 



