COMMERCIAL FEEDING-STUFFS 255 



become so through the treatment it receives, including 

 soluble proteins, amino acids, and the soluble mineral 

 salts of the corn. This steep water residue darkens the 

 color of the feed and renders it acid in varying degrees, 

 which at first caused an unwarranted prejudice against 

 gluten feeds with these characteristics. 



346. Residues from the manufacture of beet-sugar. 

 An industry apparently now established in the United 

 States, the manufacture of beet-sugar, is offering to 

 farmers two waste products, sugar-beet pulp and sugar- 

 beet molasses. The former is the extracted beet tissue 

 from which all the sugars and more or less of other solu- 

 ble compounds have been removed. This pulp as^ it 

 leaves the factory has been found to contain an average 

 of scarcely 10 per cent of solids. One ton of pulp sup- 

 plies, then, not over 200 pounds of total dry substance, 

 or perhaps 160 pounds of digestible dry substance. This 

 means that it would require six tons of wet pulp to supply 

 as much of digestible nutrients as one ton of good hay. 

 The solids of the pulp must be regarded as inferior to those 

 of the beets before extraction because consisting more 

 largely of fiber and gums whose productive value is below 

 that of sugar. Experiments at Cornell University in- 

 dicated that the pulp is worth about one-half as much 

 as corn silage, which would be approximately the rela- 

 tion of digestible matter in the two materials. 



Sugar-beet pulp v is, however, a useful, succulent food, 

 and may be fed to advantage in quantities from seventy- 

 five to one hundred pounds daily to full-grown animals, 

 provided it can be purchased at a price proportional to 

 its value. 



The pulp is not adapted to transportation for long 

 distances because of the heavy expense of freight and 



