320 
Journal of Agricultural Research 
Vol. XXI, No. 5 
was added to the ash-free blood protein, the efficiency was greatly in¬ 
creased. The protein from com germ was as efficient in its effect on the 
storage of total nutrients as the seventh day feeding of casein. The 
corn, starch, and casein ration was the most efficient of all the rations 
tried. About pounds of constituents were stored for each pound of 
protein consumed. It was shown above that this ration was also the 
most efficient in relation to protein storage. 
Table XVII.— Relation of ash plus protein plus fat stored to protein consumed 
Ash plus 
Protein c 
mistimed. 
Experi¬ 
ment No. 
Ration. 
protein 
plus fat 
stored. 
From 
corn. 
From 
supple¬ 
ment. 
Ratio. 
II. 
II. 
Com and black blood albumen. 
Com, black blood albumen, and ash.. 
229.59 
244.21 
xo 5 - 97 
Il8. 20 
129. 21 
142. 25 
O. 98:1 
• 94-1 
V. 
Com and com germ.. 
65- 71 
3 1 - 5 ° 
82.85 
Si. 07 
22. 27 
39 - 29 
21.47 
23. 61 
41. 66 
1. 25:1 
.69:1 
1.03:1 
vi.:...: 
Com and ash-free blood protein. 
VI. 
Com, ash-free blood protein, and ash. 
VI. 
Corn, starch, casein, and ash. 
7 »- 2 5 
24. 84 
22. 61 
I. 66:1 
GRAPHIC PRESENTATION OP THE RELATION BETWEEN THE PROTEIN CON¬ 
SUMED AND THE TOTAL GAIN OP CHEMICAL CONSTITUENTS 
The relation between the protein consumed and the storage of ash, 
protein, and fat is shown graphically in figure 16. The bars are arranged 
in order of the increasing amounts of constituents stored. 
The efficiency of corn alone as a ration for growing pigs, as measured 
by the total constituents stored, can be greatly increased by the addition 
of a small amount of protein from milk. If the amount of protein from 
milk is increased above a certain amount, the efficiency of the ration as a 
whole is decreased. The increase in protein simply increased the rate of 
growth. This is true when the ratio is narrow. The proteins from blood 
were the least efficient although they furnished one-half of the total pro¬ 
tein. Proteins from milk were the most efficient when fed in a ratio made 
wide by the addition of starch. The proteins from corn germ, as meas¬ 
ured by the total constituents stored, compare well with the proteins 
from other sources. 
INFLUENCE OP QUANTITY OP PROTEIN CONSUMED UPON QUANTITY OP 
FAT STORED 
In the preceding discussion it has been shown that the quantity and 
quality of protein consumed has a limited influence on the relative 
quantity of the total ash, protein, and fat stored. On the whole, the 
more protein that is consumed in the ration the more constituents will 
be stored; but a ration that is liberal in protein will not store a pro- 
