122 PRINCIPLES OF ANIMAL NUTRITION. 
Apparently Digested. 
Nitrogen | Gain of 
a of Urine, | Nitrogen 
opsel eat, ge, | “ora” | Som 
Grms.|Grms.| Grms. Bs 
Ox H. 
Period 5| Extracted straw..| 116 | 3129) 3351 | 102.47 76.31 | 26.16 
« 4] Basal ration...... 101 | 1083) 2912 | 116.51 | 109.28 7.23 
Difference.. .... 15 | 2047] 439 |—14.04 |—32.97 | 18.93 
66° <3) Starch. oxo wees 92 | 1057| 4773 94.66 81.71 | 12.95 
««  A| Basal ration... ... 101 | 1083) 2912 | 116.51 | 109.28 7.23 
Difference...... —9 | —26) 1861 |—21.85 |—27.57 5.72 
Ox J. 
Period 5| Extracted straw. .} 110 | 3101) 3344 | 112.19 95.80 | 16.39 
«4! Basal ration...... 107 | 1114} 2895 | 128.11 | 122.62 5.49 
Difference...... 3 | 1987} 449 |—15.92 |—26.82 | 10.90 
« 3) Starch........... 85 | 1105} 4396 | 118.18 | 103.13 | 15.05 
«4! Basal ration...... 107 | 1114] 2895 | 128.11 | 122.62 5.49 
Difference... . .}|—22 —9' 1501 | —9.93 |—19.49 9.56 
animal, on the contrary, the effect of the digested matter of the ex- 
tracted straw was but little more than two thirds that of the starch. 
Ustjantzen * has recently reported the results of an experiment 
upon a sheep substantially like those of Weiske (p. 118), a basal 
ration of beans receiving, in succeeding periods, additions of meadow 
hay, rice, or sugar, the two latter being computed to supply an 
amount of digestible carbohydrates equal to the digestible nitrogen- 
free extract supplied by the hay. The increased amounts of crude 
fiber and nitrogen-free extract digested and the resulting increases 
in the gain of nitrogen by the animal were as follows: 
1 ; Nitrogen-free Gain of 
Crude Fiber, 4 
oo oat ee en ens 
From hay ration ............... 108 .60 95.55 3.33 
BES TCR te cada ahgcaeudsaneraioecese —2.53 107.15 2.90 
SS TSUGAR FE pstctetaln Saleuate wie 5.07 109.20 2.59 
It appears that, as in Weiske’s experiments, the carbohydrates 
of the rice and sugar produced nearly as great an effect upon the 
* Landw. Vers. Stat., 56, 463. 
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