Dec. 3, 1917 
Fatness of Cattle and Feed Utilization 
465 
The protein and nonprotein content of the feeding stuffs was computed 
from the nitrogen, using the following factors: 
For protein: 
Alfalfa hay. 6.25 
Wheat bran. 5 * 7 ° 
Maize meal.. 6. o 
Cottonseed meal. 5. 5 
For nonprotein. 4-7 
Table i .—Composition of dry matter of feeding stuffs 
Feed and period. 
Ash. 
Pro¬ 
tein. 
Non¬ 
protein. 
Crude 
fiber. 
Nitro- 
gen-frefe 
extract. 
Ether 
extract. 
! 
Total 
nitro¬ 
gen. 
Carbon. 
Heat 
of com¬ 
bustion 
per 
kilo¬ 
gram. 
Alfalfa hay: 
Period 1. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Calories t 
9. 66 
12. 13 
3. 01 
29. 60 
43 * 59 
2 . OI 
2.58 
45*04 
4 , 344 
Period 2. 
9. 11 
11-34 
3.02 
32 - 3 I 
42.41 
I.81 
2. 46 
45. 12 
4,340 
Periods 3 and 4. 
9*49 
II. 85 
3 * 05 
3 °* 3 ° 
43*04 
2. 27 
2. 54 
45 - 16 
4 , 339 
Average.. 
9. 42 
11. 77 
3*03 
3 °* 74 
43.01 
2. 03 
2- 53 
45 * n 
4,341 
Average of 3 sam¬ 
43*63 
I. 96 
44.98 
4,368 
ples, 1911-12.... 
9. 06 
12. 39 
2. 86 
30. 10 
2- 59 
Average of 7 sam¬ 
1.76 
ples, 1912-13- 
9. 26 
11. 29 
3* 14 
30.46 
44* 09 
2.47 
44. 90 
4,350 
Wheat bran: 
Period 1. 
* 6. 54 
14.91 
1. 48 
9.70 
62. 64 
4 * 73 : 
2* 93 
45 - 85 
4,597 
Period 2. 
6.44 
14. 52 
1. 92 
10.09 
62. 22 
4. 81 
2. 96 
45 - 98 
4 , 587 
Periods 3 and 4. 
6. 50 
14. 56 
1. 80 
9 - 77 
62. 23 
5 * i 4 
2. 94 
45 - 93 
4,573 
Average. 
6 . 49 
14.67 
i* 73 
9 - 85 
62.37 
4.89 
2.94 
45 * 92 
4, 586 
Maize meal: 
Period 1. 
i- 53 
9.40 
. 22 
2. 36 
82. 16 
4*33 
1. 61 
46. 22 
4,488 
Period 2. 
1.44 
9.46 
•25 
2. 27 
82-35 
4* 23 
1. 63 
45 * 74 
4, 457 
Periods 3 and 4. 
1.49 
9 - 56 
. 22 
2 . OI 
82. 50 
4. 22 
1. 64 
45 * 97 
4 , 46 s 
Average. 
i *49 
9 * 47 
•23 
2. 21 
82. 34 
4. 26 
1. 63 
45-98 
4,470 
Cottonseed meal: 
Period 1. 
6. 52 
33*43 
1.87 
12. 72 
37*32 
8.14 
6.48 
48. 11 
4,917 
Period 2. 
6- 37 
33 * 30 
2. 22 
12. 31 
37 * 70 
8. 10 
6- 53 
47 * 99 
4 ,904 
Periods 3 and 4. 
7. 41 
34 * 77 
2.86 
9. 48 
36. 81 
8. 67 
6- 93 
48. 19 
4 ,969 
Average. 
6. 77 
33-83 
2. 32 
II. 50 
37.28 
8. 30 
6. 6 S 
48. 10 
4 , 930 
DIGESTIBILITY OF RATIONS 
The digestibility of the rations was determined in the usual manner. 
In period 3 residues of mixed hay and grain were left uneaten. In the 
computation it is assumed that the proportions of the different feeding 
stuffs in the residues were the same as in the original ration, the actual 
composition of the residues agreeing closely with that computed on this 
assumption. The digestibility of ttie single feeding stuffs was not 
determined. 
