3H 
Journal of Agricultural Research 
Vol. XXI. No. 5 
Table XI. — Relation of protein stored to protein consumed 
Experi¬ 
ment No. 
Ration. 
Protein 
stored. 
Protein consumed. 
Ratio. 
Prom 
com. 
From 
milk. 
III . 
IV . 
Com and milk protein. 
Pounds. 
27 - 33 
20. 18 
21. 84 
24. 30 
22. 90 
Pounds. 
90 - 54 
84.65 
6s- 72 
77.04 
47-35 
Pounds. 
89-39 
66. 65 
5 °- 72 
46.32 
80. 70 
i :6. 58 
1:7.49 
i^ 5 - 33 
1:5. 08 
1 - 5-59 
Com and casein. 
V.... 
V. 
Com and milk albumin ... 
VI. 
Com and casein. 
The protein from milk varied from a little less than one-half to almost 
two-thirds of the total protein consumed. The amount of protein stored 
was from about one-half to about one-fourth of the protein supplied by 
the milk. This is in sharp contrast to the results where minimum or 
medium amounts of milk protein were fed. When milk protein was fed 
in minimum amounts the pounds of protein stored were about twice the 
pounds of protein supplied in the milk. When milk protein was fed in 
medium amounts the pounds of protein stored were nearly the same as the 
pounds of milk protein supplied. When milk protein was fed in large 
amounts, the amount of protein stored was from less than one-third to 
about one-half what was supplied in the milk. That is, from 3 pounds 
of milk protein supplied, in addition to what the corn furnished, less than 
1 pound was stored. The average ratio of protein storage when large 
amounts were fed was 1 to 6, as compared with 1 to 3.5 when medium 
amounts of milk protein were fed or 1 to 7.5 when corn was fed alone. 
PROTEIN STORED WHEN CORN WAS SUPPLEMENTED WITH PROTEIN 
IN LARGE AMOUNTS FROM VARIOUS SOURCES 
The proteins from other sources than milk were black blood albumen, corn 
germ, and ash-free blood protein (p. 280-281). These rations were made 
up as follows: Black blood albumen constituted a little over 11 per cent 
of the ration having a nutritive ratio of 1 to 5.10; corn germ was about 
one-third of the ration having a nutritive ratio of 1 to 8; ash-free blood 
protein was fed in such amounts as to make a nutritive ration of 1 to 3; 
starch and casein were added in such amounts as to make a nutritive ratio 
the same as for corn, or 1 to 8.76. Figures on the feed and growth of six 
pigs fed on com supplemented with protein from these sources as indi¬ 
cated, showing the ratio of protein stored to protein consumed, are as 
given in Table XII. 
The wide nutritive ratios with com and com germ, or corn, starch, 
casein, and ash, resulted in the most economical storage of protein. This 
is in harmony with results presented in the preceding paragraphs. 
