408 



PRINCIPLES OF AGRICULTURAL CHEMISTRY 



Coefficients of Digestibility. The following are coefficients of 

 digestibility of a few feeding-stuffs. 1 



COEFFICIENTS OF DIGESTIBILITY OF SOME FEEDING STUFFS. 



Digestibility of Constituents of Nitrogen-Free Extract.-' Inves- 

 tigations as to the digestibility of the constituents of nitrogen- 

 free extract, show that the sugars and the true starch are prac- 

 tically completely digested when the food is properly masticated. 

 The pentosans are digested to about the same extent as the nitro- 

 gen-free extract, while the remaining and unknown constituents 

 of the nitrogen-free extract have a much lower digestibility. 3 It 



COEFFICIENTS OF DIGESTION OF CRUDE FIBER AND OF CONSTITUENTS 

 OF THE NITROGEN-FREE EXTRACT. 



1 Bulletins 147, 104, Texas Exp. Sta.; Bulletin 77, Office Exp. Sta. 

 - Headden, Bulletin 124, Colorado Station. 



3 Fraps, Bulletin 104, Texas Exp. Sta. 



4 Starch included. 



