Dec. 3, 1917 
Fatness of Cattle and Feed Utilization 
453 
Table I .—Periods and rations 
Daily rations. 
Period. 
Preliminary period. 
Digestion period. 
Hay. 
Concen¬ 
trates. 
Kgm. 
Kgm . 
Period 1 .. 
Transition 
Period 2. . 
Period 3. . 
Period 4. . 
November 2-12_ 
November 23-29 ... 
November 30-De- 
cember 10. 
March 15-25. 
April 5-15. 
November 13-22_ 
December 11-20.... 
March 26-April 4... 
April 16-25. 
i*7 
3*5 
3-8 
2. O 
3*4 
7.0 
7.6 
4. o 
DIGESTIBILITY 
The digestibility of the several rations was determined in the usual 
manner, the results in detail being contained in Table 2 of the Appendix. 
The feces in period 3 were very watery, but it does not appear that this 
resulted in any lower digestibility. The percentage digestibility of the 
several nutrients in the four periods is shown in Table II. 
Table II. —Digestibility of rations 
Constituent. 
Before fattening. 
After fattening. 
Period 1 
(light 
ration). 
Period 2 
(heavy 
ration). 
Period 3 
(heavy 
ration). 
Period 4 
(light 
ration). 
Per cent. 
Per cent . 
Per cent. 
Per cent. 
Dry matter.:. 
Ash. 
76.4 
74. 2 
74.8 
76. 7 
43-9 
42. 6 
46 . 5 
5 i* 7 
Organic matter. 
78. 1 
75 - 6 
76.4 
78. r 
Protein. 
75-6 
71. 6 
75 - 9 
75 * 7 
Non-protein. 
62. 4 
59*8 
23. 2 
67. 7 
Crude fiber. 
43 * 2 
45 * 1 
41.4 
42. 9 
Nitrogen-free extract. 
85-7 
83.6 
84. 0 
85.8 
Ether extract. 
82. 2 
79.6 
84*3 
81.8 
Total nitrogen. 
75 - 2 
71.4 
69.8 
75*8 
Carbon. 
76. 2 
74.0 
74. 6 
76. r 
Energy. 
75-6 
73*4 
74 * 1 
75-6 
Effect of amount of feed. —Both before and after fattening the 
heavier rations showed a distinctly lower digestibility than the lighter 
ones, the exception being the crude fiber in periods 1 and 2 and the 
protein and ether extract in periods 3 and 4. The averages for dry 
matter, nitrogen, carbon, and energy are contained in Table III. 
