RESULTS OF SOFT-PORK INVESTIGATIONS, II 29 
Tabus 11. — Results of feeding corn with tankage following soy beans grazed 
supplemented by a medium {2 per cent) ration of shelled corn hand fed — Con. 
CORN-AND-TANKAGE FEEDING PERIOD 
Number of pigs used 45 
Average number of days fed 54. 00 
Average initial weight pounds— 105. 58 
Average final weight do 198. 66 
Average gain do 93. 08 
Average daily gain do 1. 72 
Feed consumed per 100 pounds gain : 
Shelled corn do 406. 85 
Tankage do 38. 65 
Mineral mixture 1 do 4. 20 
Total feed do 449. 70 
1 Mineral mixture composed of : Charcoal, 12 parts ; ground limestone, 4 parts ; common 
salt, 1 part. 
The average daily gain of 1.01 pounds during the soy-bean graz- 
ing period must be regarded as very satisfactory, expecially when 
consideration is given to the small size of the pigs at the beginning 
of the tests. The feed consumed per 100 pounds gain, in addi- 
tion to the soy beans grazed, commands particular attention. As 
an average 143.14 pounds of feed, exclusive of soy beans, were con^ 
sumed by the pigs in making 100 pounds of gain. Since 400 or 
more pounds of grain or concentrated feed are usually required to 
produce 100 pounds of gain in dry lot, it is obvious that the bean 
crops grazed in these experiments had an average value equal to 
about 250 pounds of grain for each 100 pounds of gain made. 
These results indicate that this is a very satisfactory method of 
feeding growing pigs and of utilizing soy beans as a hog feed. 
During the finishing period these pigs also made a very satisfactory 
rate of gain. The feed consumed per 100 pounds gain during this 
period was approximately normal for pigs of their size. 
D. SOY BEANS WITH CORN IN DEFINITE PROPORTION 
With the marked increase in the production and feeding of soy 
beans in the United States conditions sometimes arise under which 
the farmer considers it desirable to feed them as the protein supple- 
ment to corn in dry lot or on pasture. The softening influence of 
the soy beans can not be disregarded, however, and the feeder is 
confronted with the question as to the proportion in which they 
can be fed without producing soft hogs. This question was deemed 
of sufficient importance to receive full consideration in these investi- 
gations. 
The Indiana station and the Animal Husbandry Experiment Farm 
conducted the tests reported below. The work was begun in 1924 and 
phases of it are still incomplete. The plan for the first series of ex- 
periments provided for study of the influence of mixtures of ground 
corn and ground soy beans in proportions of 12 :1, 9 :1, 6 :1, and 3 :1 
when fed in dry lot for fattening purposes. The Indiana station 
has completed four experiments and the Animal Husbandry Ex- 
periment Farm one experiment in this series. In the former cases 
the Manchu variety of soy beans was used and in the latter case 
the Virginia variety. In all five experiments the mixture of ground 
corn and ground soy beans in each lot was self -fed, free choice, with 
mineral mixture and pressed block salt. The mineral mixture was 
composed of wood ashes, 10 pounds ; 16 per cent acid phosphate, 10 
pounds ; and common salt, 1 pound. 
