SUGAR FACTORf FEEDS AND OIL MEALS 



199 



undecorticated, so-called cold-pressed cotton-seed cake; this is the 

 product obtained when the whole uncrushed seed is subjected to the 

 cold-pressure process for the extraction of oil. The difference in the 

 value of the two kinds of meal is readily seen from the following 

 average analyses: 



Composition of Cotton-seed Meal and Cold-pressed Cotton-seed Cake, in Per Cent 



Eecent analyses of cotton-'seed meal appear to run considerably 

 lower in protein than given above, viz., about 42 or 41 per cent, 

 with fat likewise lower (about 8 per cent), and fiber higher (10 per 

 cent). The trade recognizes three grades of cotton-seed meal: 

 Choice, prime, and good. The former " must be finely ground, not 

 necessarily bolted, perfectly sound and sweet in odor, yellow, free 

 from excess of lint, and must contain at least 41 per cent protein." 

 The protein limits for prime and good cotton-seed meal are 38.6 

 per cent and 36 per cent, respectively. The analyses given above 

 indicate the difference in the value of the decorticated and cold- 

 pressed cotton-seed cake. The high fiber content of the latter feed 

 is important, and the result is shown by the lower digestibility of 

 this feed compared with cotton-seed meal. 9 



Average Per Cent Digestibility of Decorticated and Cold-pressed Cotton-seed Cake 



It is evident, from the differences in the protein and fiber con- 

 tents of the two feeds, that cotton-seed meal is a much more valu- 

 able seed than cold-pressed cake, although the latter ordinarily 



8 Pott, " Handb. tier. Ernahrung," iii, 2, p. 102. 



