DESCRIPTION OF FEEDING-STUFFS 215 



mouldy, and are then injurious. Milking cows 

 may be given 20-40 lbs. per head per day. Fattening 

 bullocks and pigs can take up to 25 lbs. per 1000 lbs. 

 live weight ; but for horses and sheep they are 

 only to be regarded as a supplementary food, 

 because of the large amount of water they hold. 



When the grains are dried horses may be given 

 half of their corn ration in this form, the quantity 

 to be fed to cows and fattening bullocks is not more 

 than 6 lbs., fattening sheep up to 1 lb. per day; 

 pigs are not able to satisfactorily digest dried 

 grains. The grains from distilleries are very 

 similar in method of preparation and use. 



Distillery waste, sometimes called distillery slump, 

 is quite different from brewery or distillery grains. 

 When the mashed grain has fermented, and the 

 liquid not been drawn off, there is left, after the 

 distillation of the alcohol, a material which con- 

 tains everything but the fermented carbohydrate. 

 During the fermentation the yeast, which is rich in 

 nitrogenous matter, increases, and at the same time 

 certain amides are formed into protein, so that 

 distillery waste contains more of this than did 

 the crude material. In unfermented mash made 

 from potatoes there was found in one case only 55% 

 crude protein, whilst the material left after dis- 

 tillation of the alcohol contained 72%. 



As the protein of the yeast is digestible the slump 

 becomes more valuable by its presence, but as the 



