31 8 Journal of Agricultural Research voi. xxi.no. s 
The average from these ratios is a little less than i.i to i. That is, 
for i pound of protein consumed the total of ash, fat, and body protein 
stored is about i.i pounds. The older continuation pigs were using the 
food as efficiently as the younger pigs. As these two pigs did not start 
to make satisfactory gains till they were nearly 2 years old, it means 
that during the third or last year of their life the ratio was narrower 
than for the younger pigs. 
SUM OF CONSTITUENTS STORED FROM CORN SUPPLEMENTED WITH A SMALL 
AMOUNT OF PROTEIN FROM MILK 
The addition to corn of a small amount of protein from milk increased 
the amount of total constituents stored in ralation to the total protein 
consumed. This is shown in the figures given in Table XIV. 
Table XIV .—Relation of ash pltis protein plus fat stored to protein consumed 
Ash plus 
Protein consumed. 
Experi¬ 
ment No. 
Ration. 
protein 
plus fat 
stored. 
From 
corn. 
From 
supple¬ 
ment. 
Ratio. 
IV....... 
IV . 
Com and milk protein every seventh 
day. 
Com and milk albumin. 
119.68 
IOO.21 
66.60 
59.OO 
55 -16 
8.00 
6.71 
5 - 6 i 
I .61: I 
I. K2‘. I 
I. 25.I 
V. 
Com and casein every seventh day... 
75*70 
The average of these ratios is very nearly 1.46 to 1, or 1.46 pounds of 
constituents stored for each pound of protein consumed, and shows the 
distinct advantage of adding this small amount of protein from milk. 
SUM OF CONSTITUENTS STORED FROM CORN SUPPLEMENTED WITH A 
MEDIUM AMOUNT OF PROTEIN FROM MILK 
When corn was supplemented with a medium amount of protein from 
milk amounting to a little less than one-third of the total protein fed, 
the ratio of constituents stored to protein consumed was 1.41 to 1. 
There were only two pigs fed with this medium amount of protein. 
(Table XV.) - 
Table XV .—Relation of ash plus protein plus fat stored to protein consumed 
Experi¬ 
ment No. 
Ration. 
Ash plus 
protein 
plus fat 
stored. 
Protein consumed. 
Ratio. 
From 
corn. 
From 
supple¬ 
ment. 
VI. 
Corn and casein reducing. 
109.08 
103.21 
53*07 
20.8l 
25.84 
1 .52 : i 
1.31:1 
VI . 
Com and casein 1.5!!. 
