COMPUTING RATIONS BY STARCH VALUES 



eluded that 100 pounds of linseed cake have a starch 

 value, or starch equivalent, of 77 pounds. Other 

 substances gluten, earthnut oil, potato starch, cane 

 sugar and pulped rye straw were all used and the 

 weight of fat produced per 100 pounds of the food 

 ingredient digested was obtained, showing averages 

 as follows: Pure protein, 23.5 pounds; fat, 59.8 

 pounds ; potato starch, 24.8 pounds ; cane sugar, 18.8 

 pounds; and crude fiber, 25.3 pounds. 



Relative Starch Values. Kellner has devised a 

 method for calculation of values based on the fat- 

 producing ability of starch. He puts starch at 100 

 and grades the other nutrients to starch in accord- 

 ance with their fat-producing values. Using starch 

 as the unit of measure, the following values of the 

 other nutrients were found to be as follows : 



Here we see that fat or oil ranks first, ranging 

 from 1.91 in roots, chaff and coarse fodders to 2.41 

 in the important seeds or their by-products, like the 

 oil meals. Sugar is decidedly inferior to starch, the 

 inferiority being due, it is claimed, to fermentation 

 while this nutrient is in the digestive tract. Protein is 



