98 



AGRICULTURAL EXPERIMENT STATION. 



Digestibility of Nitrogen-Free Extractive Matter. 



"With a part of these fodders an attempt has been made to 

 ascertain the digestibility of the more valuable carbohydrate 

 material, viz., the sugars, and starch and other compounds that by 

 treatment with an acid are changed to sugar, crude fiber excepted. 

 In order to compare the digestibility of these compounds with that 

 of the total nitrogen-free extractive matter, determinations of the 

 sugars, starch and other non-nitrogenous material capable of inver- 

 sion to sugar have been made in the feces from several of the 

 fodders, by a method exactly similar to that used for the hays. 



The following tables contain the percentages of starch in the feces, 

 and a comparison of the calculated digestibility of the carbohydrates 

 with that of the total nitrogen-free extractive matter. The term 

 starch is intended to include all material, not sugar, that is inverted 

 by the treatment with an acid. 



XLI 



XLII.... 



XLiir... 



XL 



L 



XLIV.... 

 LI 



XLV . . . . 

 XXXIX. . 

 XLVL... 

 XLVII . . 



Feces from 



Alsike clover. 

 White clover . 

 Blue joint ... 

 Orchard grass 



Red top 



Timothy 



Timothy 



Wild oat grass 

 Witch grass. . 

 Buttercup . . . 

 White V7eed. . 



In 100 parts water-free substance. 



o £ 2 



27.65 

 37.24 

 42.22 

 44.15 

 48.81 

 41.79 

 43.55 

 48.66 

 40.84 

 34.22 

 36.40 



ai 



6.44 

 13.74 

 10 73 

 10.50 

 12.44 

 11.38 

 11.67 

 12.85 

 11.94 

 5.98 

 5.64 



o 



21.21 

 23.50 

 31.49 

 33.65 

 36.37 

 30.41 

 31.88 

 35.81 

 28.90 

 28.24 

 30.76 



D S ^ 



Oi boS 



23.29 

 36.89 

 25,41 

 23.78 

 25.49 

 27.23 

 26.80 

 26.41 

 29.23 

 17.47 

 15.49 



