June i, 1921 
Effect of Ration on the Development of Pigs 
325 
The figures giving the total thermal value of the feeds consumed in 
the different rations during the feeding trial, as well as the total thermal 
value of the protein and fat stored, are shown in Table XX. The thermal 
value of the ration was calculated by multiplying the pounds of carbohy¬ 
drates and protein consumed by 1.8 and the pounds of ether extract by 
4.05, assuming that the energy value of these constituents is equal to 
1,800 calories per pound of carbohydrates and protein and 4,050 calories 
per pound of ether extract. For the constituents stored the figures 1.86 
and 4.2 were used for the respective constituents. The ratio was calcu¬ 
lated by dividing the therms stored into the therms consumed. The 
graphic representation of these various values is shown in figure 18. 
Table XX. — Relation between therms consumed and therms stored 
Experi¬ 
ment No. 
Ration. 
Ill . 
Ill . 
VI . 
VI . 
V . 
III . 
VI . 
IV . 
IV . 
II . 
II . 
IV . 
V . 
VI . 
V. ...... 
VI. 
VI. 
VI. 
IV. . .... 
VI. 
V . 
IV. 
V . 
IV. 
III . 
III-V. . . 
II. 
III-V. . . 
II. 
Com and protein-free skim milk. 
Com and ash. 
Corn alone. 
Com and ash. 
Com alone. 
_do.. 
Corn and ash-free blood protein. 
Com and ash. 
Corn alone. 
Com and ash. 
Corn alone. 
Corn and protein-free skim milk. 
Corn and corn germ. 
Com, starch, casein, and ash. 
Corn and casein every seventh day. 
Com, ash-free blood protein, and ash. 
Com and casein 1:1}^ and ash. 
Com, casein 1:3, and ash. 
Corn and albumin.... 
Corn, casein, reducing, and ash. 
Com and casein.... 
Corn and milk protein every seventh day. . 
Corn and albumin. 
Com and casein.. 
Corn and milk protein.. 
Com and protem-free skim milk. 
Com and black-blood albumen. 
Com and synthetic ash. 
Com, black-blood albumen, and ash. 
Themis 
stored. 
Therms 
consumed. 
Ratio. 
— 26.82 
176.43 
Loss. 
-l 3- 2 3 
250 - T 3 
Loss. 
-I.23 
223.83 
Loss. 
6.96 
212.92 
30.64 : I 
IO1.94 
448-75 
4.40 : 1 
29.88 
389.98 
13.06 : 1 
114.26 
426.51 
3-73 : 1 
I2 o -53 
535 -Si 
4-45 : 1 
I 7 ^- 3 i 
707-47 
4.07 : 1 
181.87 
7 oo -57 
3-85 :1 
231.10 
826.9O 
3.58 : 1 
241.78 
735-47 
3.04 :1 
241.91 
812.98 
3 - 3 6 : 1 
281.62 
825.07 
2.93 :1 
294-37 
922.34 
3 -i 3 : 1 
296.05 
752.61 
2.54 : 1 
372.54 
932.27 
2.50 : 1 
381.52 
1,020.66 
2.68 : 1 
39 1 •20 
1,012.09 
2.59 :1 
397•*4 
980.02 
2.47 :1 
444.61 
1,200.27 
2.70 : 1 
469.41 
1,140.43 
2.43 :1 
518.97 
387-45 
2.67 : 1 
581.96 
1,558.12 
2.68 : 1 
710.02 
1 , 746.15 
2.46 : 1 
871.00 
3,766.56 
4.32 : 1 
908.02 
2,307.81 
2.54 : 1 
9 11 •57 
3.457-76 
3-79 : 1 
970.14 
2,569.86 
2.65 :1 
CORN WITHOUT ADDITIONAL PROTEIN 1 
The pigs fed on corn alone or on com and ash or on com and protein-free 
skim milk stored less therms on the average in proportion to the thermal 
value of the feeds consumed than did the pigs to whose ration protein 
from animal sources was •added. The average ration for all the pigs 
which had com and had no protein from other sources was nearly i to 4. 
i The five pigs which made a very small gain are not included in discussion. 
