SUGAR FACTORY 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 40 to 42 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 



9 Pott, "Handb. tier. Ernahrung," iii, 2, p. 102; Texas Bui. 189. 



