30 DEPARTMENT BULLETIN" 1492, IT. S. DEPT. OF AGRICULTURE 
Results considered as conclusive have been obtained from the lots 
fed the 3 :1 combination of corn and soy beans. The results from this 
combination only are reported in this bulletin. Further work is to 
be done with the 12 :1, 9 :1, and 6 :1 mixtures before the results are 
published. 
COMPOSITION OF THE FEEDS 
Table 12 shows the composition of the soy beans used in the differ- 
ent experiments, together with the average composition of the beans 
used. For comparison is given the average composition of soy beans 
as reported by Henry and Morrison (o). The average analysis of 
No. 2 dent corn as reported by them is shown also. It is believed 
that this represents satisfactorily the average of the corn fed in the 
five experiments. 
Table 12. — Composition of soy deans and corn 
Feed 
• 
Water 
Ash 
Crude 
protein 
Fiber 
Nitrogen- 
free 
extract 
Fat 
Soy-bean seed (first Indiana experiment) - _ 
Soy-bean seed (second Indiana experi- 
Per cent 
6.2 
5.8 
5.8 
5.8 
9.9 
Per cent 
6.4 
5.5 
5.5 
5.5 
4.4 
Per cent 
38.7 
32.4 
32.4 
32.4 
37.8 
Per cent 
4.5 
5.4 
5.4 
5.4 
5.2 
Per cent 
21 A 
32.1 
32.1 
32.1 
25.2 
Per cent 
16.8 
18.8 
Soy-beanseed (third Indiana experiment) „ 
Soy-bean seed (fourth Indiana experiment) . 
Soy-bean seed (Beltsville experiment) 
18.8 
18.8 
17.5 
6.7 
5.5 
34.7 
5.2 
29.8 
18.1 
9.9 
14.8 
5.3 
1.4 
36.5 
9.6 
4.3 
1.9 
26.5 
67.6 
17.5 
4.8 
WEIGHTS OF PIGS USED 
Complete data are available on 46 hogs fed the 3 : 1 mixture of the 
two feeds. The range of average initial weights in the five experi- 
ments was from 64 pounds to 132 pounds, while that of the individual 
initial weights was from 49 to 146 pounds. The average beginning 
weight for the 46 pigs was 106.13 pounds. 
SOFTNESS OF CAECASSES 
A total of 12 representative or check pigs were slaughtered and 
studied at the beginning of four of the experiments considered in 
this group. Owing to an insufficient number of animals available 
it was not practicable to slaughter checks in the other case. The 12 
pigs had an average slaughter weight of 102.92 pounds and their 
average refractive index of back fat was 1.4604. It is believed that 
the condition of these 12 pigs, as indicated by this refractive-index 
value, was representative of the initial condition of the pigs which 
were fed experimentally. 
Check or control lots were self-fed a mixture of ground corn 12 
parts and tankage 1 part with the mineral mixture mentioned above 
for comparison with the soy-bean lots in all five experiments. To 
show in general the comparative results of feeding the corn-soy-bean 
and corn-tankage mixtures Table 13 is given. 
