14 BULLETIN 751, U. S. DEPARTMENT OF AGRICULTURE. 
were maintained for all the experiments. The data resulting from 
these tests are summarized in the tables which follow : 
Data of digestion experiments with course wheat bran in a simple mixed diet. 
Experiments, subjects, and diet. 
Weight 
of foods. 
Constituents of foods. 
Water. 
Protein. 
Fat. 
Carbo- 
hydrates. 
Ash. 
Experiment Xo. 409, subject to D.G.G.: 
Bread made with unground bran 
Grams. 
1 260 0 
' 546.0 
784.0 
199.0 
142.0 
Grams. 
660.4 
412.2 
707. 8- 
21. 9 
Grams. 
55. 1 
13.7 
. 2.0 
2. 0 
Grams. 
105. 2. 
.5 
2.5 
169. 1 
Grams. 
373.3 
114.1 
70. 2 
Grams. 
66.0 
5.5 
1.5 
6. 0 
Potato 
Fruit 
Butter 
Sugar 
142.0 
Total food consumed 
2,931.0 
OQfi ft 
zoo. u 
1, 802. 3 
72.8 
50.4 
22.4 
277.3 
17.8 
259.5 
699.6 
140.3 
559.3 
79.0 
27.5 
51.5 
Amount utilized 
Digestibility of entire ration (per cent).. 
30.8 
93.6 
79.9 
65.2 
Estimated digestibility of bran alone 
(per cent) 
13.4 
45.4 
Experiment Xo. 410, subject A.J.H.: 
Bread made with unground bran 
Potato 
1 107 0 
' 509' 0 
580.2 
384.3 
621.1 
25.6 
4S.4 
2.3 
92.4 
, . 5 
2.2 
198. 1 
328.0 
106. 4 
61. 7 
58.0 
5.1 
1.3 
7. 0 
Fruit 
688.0 
Butter 
233.0 
77.0 
Su^ar 
77.0 
Total food consumed 
2, 614. 0 
O^A ft 
ZOO. U 
1,611.2 
65.1 
66.2 
293.2 
32.9 
260. 3 
573. 1 
121.6 
451.5 
71.4" 
35.3 
36.1 
Amount utilized 
Digestibility of entire ration (per cent) 
88.8 
78.8 
50.6 
Estimated digestibility of bran alone 
(per cent) 
(0 
45.8 
Experiment Xo. 411. subject B.L.S.; 
Bread made with unground bran 
Potato 
L, OOO. U 
361.0 
817.0 
149.0 
208.0 
699.7 
272.6 
737.6 
16.4 
58.3 
9.0 
2.0 
1.5 
111.5 
.4 
2.6 
126.6 
395.6 
75.4 
73. 2 
69.9 
3.6 
1.6 
4. 5 
Fruit 
Butter 
Sugar 
208.0 
Total food consumed 
2,870.0 
226. 0 
1,726.3 
70.8 
63.0 
7.8 
241.1 
17.4 
223.7 
752. 2 
114.5 
637.7 
79.6 
31.1 
48.5 
Amount utilized 
Digestibility of entire ration (per cent) 
11.0 

92.8 
84.8 
60.9 
Estimated digestibility of bran alone 
(per cent) 
0) 
59.4 
Experiment Xo. 412, subject O.E.S.: 
Bread made with unground bran 
Potato 

1,119.0 
507.0 
586.0 
66.0 
297.0 
586.5 
382.8 
529.0 
7.3 
4S.9 
12.7 
1.5 
0.6 
93.4 
.5 
1.9 
56.1 
331.6 
105. 9 
52.5 
58.6 
5.1 
1.1 
2.0 
Fruit 
Butter 
Sugar 
297.0 
Total food consumed 
2,575.0 
167.0 
1, 505. 6 
63.7 
33.9 
29.8 
151.9 
10.3 
141.6 
787.0 1 66.8 
97.8 25.0 
689.2 1 41.8 
Feces 
Digestibility of entire ration (per cent). 
46.8 
93.2 
87.6 62.6 
Estimated digestibility of bran alone 
(nor cor\t} 
35.6 
60.3 
1 Xegatiye results, fecal protein exceeding that in bran eaten. 
