USES OF CEREALS 545 



ing pigs; but (3) the carcasses of pigs fed barley and 

 shorts showed a greater distribution of lean and firmer 

 flesh than those of pigs fed corn and shorts; (4) that 

 ground rejected wheat will produce good gains when fed 

 to hogs in connection with shorts; (5) that it requires 

 8.9 per cent more rejected wheat than corn to produce 

 the same gains ; but (6) the quality of pork produced 

 is better than that produced by corn. 



588. Distiller's by-products. In the manufacture of 

 spirits or whisky from the different grains, corn, oats, 

 rye, and barley, there is a residue in the form of distillery 

 slop, which is dried and sold as distiller's dried grains of 

 commerce. They consist of the hulls, the germs, the 

 protein, 'and the less soluble carbohydrates of the original 

 grains, and are somewhat sour to the taste and smell be- 

 cause of the fermentation. The larger the proportion of 

 corn in distillery mashes the higher the grade of the grains 

 produced. Rye whisky grains are the poorest. Armsby 

 and Risser (1905) investigated the value of these dried 

 grains as a feed for dairy cattle, in comparison with cotton- 

 seed meal. Five pounds of distiller's dried grains caused 

 a slight increase in the milk yield over that produced 

 by 3 pounds cottonseed meal and 2i pounds corn meal. 

 The distiller's grains also caused a marked increase in 

 the fat content of the milk. The butter produced by 

 distiller's grains was not quite as good as that produced 

 by the cottonseed meal ration. The distiller's grain 

 ration was more costly than the cottonseed meal 

 ration. 



589. Grain as poultry feed. The grain of cereals is 

 commonly fed to poultry. All the cereals are used, but 

 wheat is commonly fed, of which usually the cheapest 

 varieties are employed. Some years ago large quantities of 



2 N 



