Dec. 1,1925 
The Maintenance Requirement of Dry Oows 
1059 
Table II. — Average daily live weights of experimental subjects 
Experiment and cow Nos. 
Period 
I 
Period 
II 
Period 
III 
221D-885.. ... 
Kg. 
415. 22 
399.78 
443.12 
428.80 
335. 21 
Kg. 
429.74 
424.41 
434. 36 
415. 58 
320.49 
Kg. 
« 426.36 
420.19 
221D-886 _ _____ 
221E-885____ 
221F-874_______ 
221F-887_____ 
a Only 9 days in Period III, 221D-885. 
DETAILS OF ANALYSES 
The customary feeding-stuff analyses were made on the alfalfa 
hay, grain mixture, and excreta. These data, together with the 
heat of combustion, have been computed to a dry-matter basis, 
and are presented in Tables III, IV, and V. 
Table III .—Composition of the dry matter of the feed 
Substance 
Experi¬ 
ment 
No. 
Cow and 
period 
No. 
Ash 
Pro¬ 
tein « 
Non- 
pro¬ 
tein 6 
Crude 
fiber 
Nitro¬ 
gen- 
free 
extract 
Ether 
extract 
Total 
nitro¬ 
gen 
Pro¬ 
tein 
nitro¬ 
gen 
Car¬ 
bon 
Energy 
per 
gram 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
Per 
cent 
cent 
cent 
cent 
cent 
cent 
cent 
cent 
cent 
Calories 
Alfalfa hay.. 
221D 
885- 1 
886- 1 
■7. 85 
11.09 
2.36 
37.86 
36.80 
2.03 
2.28 
1.77 
46.08 
4.53943 
885- 11 
886- 11 
885-TII 
8.38 
12.11 
2.42 
34.18 
40.84 
2.07 
2.45 
1.94 
46.12 
4.52408 
886-III 
8.44 
11.61 
2.49 
34.75 
40.75 
1.97 
2.39 
1.86 
46.05 
4.57295 
221E 
885-I-II 
7.84 
12.33 
2.47 
33.02 
42.40 
2.00 
2.49 
1.97 
46.06 
4.49728 
221F 
874-I-II 
8.03 
11.52 
2.18 
36.93 
39.70 
1.64 
2.31 
1.84 
46.55 
4.54493 
887-I-II 
8.13 
11.54 
2.19 
34.47 
41.97 
1.71 
2.31 
1.85 
46.12 
4.51322 
Grain mix¬ 
ture. 
221D 
885- 1 
886- 1 
^4.69 
13.13 
2.14 
9.02 
66.12 
4.90 
2.70 
2.24 
46.25 
4.62553 
885- 11 
886- 11 
885-ITI 
J>4.57 
12.79 
2.21 
10.62 
65.05 
4.76 
2.65 
2.18 
46.26 
4.62276 
886-III 
4.56 
12.66 
2.17 
9.54 
66.45 
4.62 
2.62 
2.16 
46.09 
4.66089 
221E 
885-I-II 
4.44 
14.45 
0.68 
9.09 
66.77 
4.57 
2.61 
2.47 
46.55 
4.60654 
221F 
874-I-II 
3.99 
12.48 
1.83 
9.15 
67.67 
4.88 
2.52 
2.13 
46.56 
4.65669 
887-I-II 
4.15 
12.61 
1.88 
9.15 
67.46 
4.76 
2.55 
2.15 
46.49 
4.66785 
Refused feed 
221D 
885-1 
6.43 
14.69 
2.80 
10.82 
61.28 
3.99 
2.95 
2.35 
45.61 
4.54953 
885-11 
6.55 
14.78 
2.59 
10.42 
63.19 
2.46 
2.92 
2.37 
45.91 
4.58022 
221E 
885-1 
7.71 
13.89 
2.07 
11.60 
60.76 
3.96 
2.81 
2.37 
44.96 
4.47602 
b Nonprotein, NX4.7. 
True protein; A. O, A. C. method. 
