June i, 1921 
Effect of Ration on the Developmeiit of Pigs 
339 
was much wider. The two pigs compare, in the first 400 days, with 
those that made a very small growth on corn alone. The pig fed corn 
alone stored energy a little more efficiently the first 600 days. During 
the last period of the experiments these pigs compare with the pig fed 
com, starch, casein, and ash and the pig fed corn and casein from 3 
pounds of milk every seventh day. But when the energy storage is 
compared with that of the pigs fed com and medium amounts of milk 
protein, the ratio is wider. This means that even in the last stages of 
growth when the increase in live weight was rapid and the gain in pro¬ 
portion to the amount of com consumed was satisfactory, the energy 
storage was not as good as with the pigs fed a moderate amount of pro¬ 
tein from sources other than corn. 
The graphic presentation of the relation between therms consumed 
and therms stored are given in figure 22. 
Table XXV .—Summary of pounds of protein consumed and pounds of protein stored, 
therms in nutrients consumed and therms in nutrients stored, and ratios 
PIG FGI) CORN AND ASH 
Period. 
Days . 
o to IOO °. 
IOO to 200. 
200 to 300. 
300 to 400. 
400 to 500 
500 to 600 
600 to 700. . . . 
700 to 800 
800 to 900.... 
Protein 
con¬ 
sumed. 
Protein 
stored. 
Ratio. 
Average 
ratio. 
Therms 
in nutri¬ 
ents con¬ 
sumed. 
Therms 
in nutri¬ 
ents 
stored. 
Ratio. 
Pounds . 
11. 72 
6- 73 
6. 99 
9-43 
13* 84 
Pounds . 
i- 54 
•99 
— 1.32 
•77 
2.97 
[ 17-61 
203. 89 
116. 96 
121. 49 
14. 62 
9. 40 
— 12. 54 
13 - 94 
12- 33 
Loss. 
4. 66 
J 
; 163- 93 
240. 69 
19. 91 
52 - 14 
8- 23 
4. 61 
22. 77 
3 - 53 
6- 45 
396 - 00 
H 7 - os 
3-38 
22. 00 
3 - 70 
5*95 
\ 5-37 
382. 56 
104- 32 
3-67 
37-04 
7-41 
5. 00 
643. 99 
227. 64 
2. 83 
54- 10 
10. 26 
5 - 27 
j 
940 - 67 
292. 00 
3- 22 
Average 
ratio. 
19 - 3 * 
3- 28 
PIG FED CORN AND PROTEIN-FREE SKIM MILK 
O to IOO° 
IOO to 200 
200 to 300 
300 to 400 
400 to 500 
500 to 600 
600 to 700 
700 to 800 
800 to 900 
7- 86 
0. 44 
1 
f 136.70 
4. 17 
32. 78 
7 - 56 
•55 
l is. 88 
1 131.42 
5- 22 
25- 17 
7.91 
— . 22 
I i 37 - 6 i 
— 2. 09 
Loss. 
10. 09 
1. 10 
) 
l 175-49 
23. 89 
7-34 
14.38 
2- 75 
5 - 23 
) 
[ 250.08 
50. 06 
4.99 
21. 67 
3-41 
6. 36 
376 . 85 
115- 96 
3 - 25 
21. 23 
7. 00 
3-03 
\ 5.96 
\ 369- 15 
173 - 04 
2- 13 
39 - 47 
6. 17 
6. 40 
686- 29 
208. oS 
3-30 
41. 08 
3 - 79 
10. 84 
J 
{ 714. 22 
224- 57 
3- 18 
PIG FED CORN ALONE 
r> to too b . 
9.07 
0* 44 
157 - 70 
4. 18 
37 - 72 
IOO to 200. 
10. 75 
1. 10 
187. 04 
10. 45 
17. 90 
t D 300 . 
11. 68 
1. 54 
203. 05 
14. 62 
13- 89 
-on til . 
19. 44 
3. 78 
12. 24 
337 - 94 
72 - 55 
4. 66 
^00 to 500. 
23- 07 
. 60 
401. 23 
35 - 56 
11. 28 
jnn to fino . 
18. 53 
. 10 
322. 18 
58. 15 
5 - 54 
600 to 700. 
19- 30 
4 - 50 
4. 29 
335- 60 
121. 77 
2. 76 
700 to 800. 
31.84 
3-87 
8. 22 
553 - 59 
146. 68 
3 - 77 
800 to 900. 
52. 96 
ii- 43 
4 - 63 
5 - 15 
920. 86 
318- 58 
2- 89 
900 to 1,000. 
65 - 23 
9. 99 
6- 53 
1? 134- 3 i 
292. 08 
3. 88 
1,000 to 1,060. 
37- 25 
10-35 
3- 60 
647. 71 
345 - 5 i 
1. 87 
«No data for 3 % months preceding experiment, 
b No data for 4 X A months preceding experiment. 
