296 
PRINCIPLES OF ANIMAL NUTRITION. 
Kellner’s Experiments. 
Kihn’s 
Experiments, : 
Per Oxen B and C, Ox D, 
Per Cent. Per Cent. 
Ashen s ca sox gate Wiley a Rare ale piolete’s 1.36 2.86 2.80 
Crude protein ...............045 87.88 83.45 82.67 
Crude fiber. ..........20.00 e000. 0.47 0.08 0.43 
Nitrogen-free extract............ 8.07 13.35 13.38 
Ether extract..............0.0-- 2.22 0.26 0.72 
100.00 100.00 100.00 
tively large. .In Kellner’s experiments the variations are not so 
great. Computed as before, the results are as shown in Table V of 
the Appendix. Summarizing Kellner’s figures, as probably the. 
more accurate, we have per gram of organic matter— 
Apparent | 
Gross Energy. Metabolizable Per Cent. 
Cais. Energy. Metabolizable. 
Cals. 
Sample I, Ox B, Period 1.... 5.675 3.019 53.18 
f Se ee eee se 5.675 3.719 65.55 
CAD ED aS aac eats 5.675 4.062 71.61 
AVOIARCS occ eee y ey gies 5.675 3.600 63.45 
Sample II, Ox D............ 5.808 4.061 69.90 
Average of [and II ......... 5.742 3.831 66.68 
The wheat gluten was by no means pure protein and the above 
figures of course apply to the feeding-stuff as a whole, including its 
fat and carbohydrates as well as its protein. The question of the 
metabolizable energy of the latter will be considered subsequently. 
PEANuT O1L.—Three experiments with this substance are re- 
ported by Kellner, In the first the oil was given in the form of an 
emulsion, prepared by saponifying a small portion of the oi) with 
sodium hydrate, and was completely digested In the second and 
third experiments it was emulsified with lime-water. In this form 
it was less well digested. and in one case (Ox F) affected the digesti- 
bility of the basal ration unfavorably. The results per gram of 
organic matter, computed as before, constitute Table VI of the 
Appendix and are summarized in the following table: 
