64 HATCH EXPERIMENT STATION. [Jan. 



cent, of fat, no rancid odor or taste was noticed after the 

 meal had been in the barn six months. Its mechanical con- 

 dition was all that could be desired. The objection to feed- 

 ing by-products especially rich in fat is that, if they are fed 

 alone in large quantities (above 3 quarts daily) or fed in 

 combination with other material of a similar nature, the ten- 

 dency is to cloy the appetite of the animal, Dr — in warm 

 weather especially — to produce inflammation of the milk 

 glands. 



In a daily grain ration of 9 pounds we would not advise 

 feeding over 3 or 4 pounds of but one by-product having 

 above 7 to 8 per cent, of fat. 



The principal criticism on this experiment would natu- 

 rally be the shortness of its feeding periods. This could not 

 have been well avoided. The results obtained, however, are, 

 it is believed, sufficient to give one an idea of the compara- 

 tive value of the two grains. 



