384 
Journal of Agricultural Research 
Vol. VII, No. 9 
HEAT PRODUCTION 
The daily heat production measured and that computed in the usual 
manner from the balance of carbon and nitrogen are compared in 
Table VII. 
Table) VII.— Observed and computed daily heat production 
Period. 
Observed. 
Computed. 
Error. 
Computed 
a - observed. 
I, first day.. 
Calories. 
12,238.7 
Calories. 
12, 128. 7 
11,634. 3 
Calories. 
— no. 0 
Per cent. 
99. IO 
I, second day. 
12, 008. 4 
IO, 389. I 
“374* 1 
96.88 
II, first day. 
10, 068. 9 
10,148. 5 
-320. 2 
96. 92 
II, second day. 
IO, 187. I 
io, 761. 9 
- 38.6 
99. 62 
Ill, first day. 
10,848. 7 
+ 86.8 
IOO. 81 
Ill, second day. 
10, 746. 5 
10, 770. 6 
+ 24, 1 
IOO. 22 
IV, first day... 
13, 757- 7 
*3, 574- 3 
-183.4 
98.67 
IV, second day. 
*3, 930- 3 
13,474*3 
. 10, 076. 8 
—456.0 
96. 73 
V, first day.-.. 
9,910. 2 
+ 166. 6 
101. 68 
V, second day. 
10,201. 4 
10,195. 8 
“ 5-6 
99- 95 
ANALYSIS OF HEAT PRODUCTION 
Standing and lying have been found to exert such an influence on the 
heat production of animals that in order to make comparisons the 
observed results must be corrected to a uniform proportion of time 
standing and lying. The total heat production for each day of the 
2-day periods has therefore been corrected to 12 hours' standing and 
12 hours' lying in the manner described in the previous paper 1 and the 
two days averaged, and the distribution of this corrected heat produc¬ 
tion also has been computed by the method explained on page 468 of 
the publication just referred to. 1 The results of these computations are 
recorded in Table VIII. 
Table VIII.— Heat production per day per head corrected to 12 hours' standing 
— r - 
Dry matter eaten. 
Total heat 
Distribution of heat production. 
Period No. 
Hay. 
Grain. 
production 
(average of 
24 hours). 
Standing. 
Rising 
and lying 
down. 
Fermen¬ 
tation. 
Remain¬ 
der. 
I..... 
II. 
Gm. 
5 , 95 2 * 3 
3 , 94 i* 5 
Gm. 
Cal. 
12,251.3 
10, 332. 9 
Cal. 
1 . 5 8 4 
1,287 
Cal. 
72 
no 
Cal. 
777 
545 
Cal. 
9, 818 
8, 39 1 
Ill. 
i, 327*9 
2, 601. 7 
11,100. 8 
1,411 
1,879 
112 
739 
8,839 
IV. 
2,271. 7 
908.7 
4 , 36 3 * O 
14,129. 0 
127 
1, 026 
11,097 
V.. 
747 * 5 
9 > 854 - 7 
I. 183 
113 
598 
7, 961 
1 Annsby, H. P., and Fries, J. A. Net energy values of feeding stuffs for cattle. In Jour. Agr. Research, 
v. 3. no. 6, p. 454. 1915. 
