270 Pork Production 



other standard protein supplements would indicate that 

 it occupies a position next to tankage in feeding value. 

 In most cases the rations of corn and linseed-oil meal did 

 not prove so palatable nor so productive of rapid gains as 

 did those of corn and skim-milk or corn and tankage. 

 Generally, the feed cost of producing a unit of gain, 

 also, was greater with the linseed-oil meal rations. Lin- 

 seed-oil meal and soybean meal were shown to have prac- 

 tically equal value. Compared with rations of corn and 

 wheat shorts or middlings, the linseed-oil meal and corn 

 rations ordinarily proved more efficient in stimulating 

 rapid and cheaper gains. 



In addition to supplying needed proteins, linseed-oil 

 meal is a natural laxative. In the absence of wheat 

 bran or succulent feeds, it possesses large value when fed 

 in small quantities to brood sows, boars, and gilts. Be- 

 cause of its regulative properties, its value for breeding 

 stock generally is probably much greater than when 

 measured solely by fattening experiments. 



BY-PKODUCTS FROM THE MANUFACTURE OF WHEAT FLOUR 



In the manufacture of flour from wheat, enormous quanti- 

 ties of by-products become annually available for feeding 

 purposes. Excepting bran and screenings, these feeds are 

 more generally fed to swine than to other classes of stock. 



Wheat bran represents the outer and woody coat of 

 the wheat berry plus small and varying quantities of 

 adhering flour particles. The bran manufactured in the 

 modern flour mill is more flaky, lighter in weight, and 

 more free of starch or flour particles than that coming from 

 mills where the separation of the white flour is less com- 

 plete. Standard wheat middlings or shorts represent the 



