RESULTS 6F SOFT-PORK INVESTIGATIONS, II 25 
FEEDING KESULTS FROM SOY BEANS WITH MEDIUM (2 TO 2.5 PER CENT) 8 RATION 
OF SHELLED CORN FOLLOWED BY CORN WITH TANKAGE 
Feeding results are available from the nine experiments in which 
corn was fed with a supplement of tankage following soy beans sup- 
plemented with a medium ration of shelled corn to pigs having aver- 
age initial weights in the different tests of more than 84 pounds. 
These are the same experiments summarized under the preceding 
section on firmness of carcasses. The actual range of average initial 
weights in the nine experiments was from 88 pounds to 141 pounds, 
inclusive, while the average weight for all 134 hogs at the beginning 
of the experiments was 110 84 pounds. 
As stated, the Mammoth Yellow variety of soy beans was used 
in the Mississippi and North Carolina tests, and the Virginia vari- 
ety in those conducted at the Beltsville station. The beans were 
hogged down in all cases, the experiments beginning after the bean 
pods had begun to turn brown. The pigs in all lots were weighed 
periodically, and using these weights as bases the amounts of shelled 
corn to be fed per day were calculated. Weighings of the pigs and 
recalculations of feed were always made as frequently as every 
two weeks and in some cases more frequently. By this method of 
calculation the shelled corn fed to the hogs averaged somewhat less 
than 2.5 per cent of their weight. Mineral mixture 9 was self-fed 
during the soy-bean-grazing period to a total of 20 hogs, or to half 
of the animals in the 1923 and 1924 tests at Beltsville. One hundred 
and fourteen of the hogs had no mineral supplement with the soy 
beans and corn. While there is some indication that the minerals 
were fed with advantage in the two Beltsville experiments, the 
results do not seem to justify separate presentation, and are included 
with the others in this summary. Only in the Beltsville experi- 
ments were minerals self-fed with the corn and tankage during the 
finishing or hardening period. 
A summary of the feeding results from the nine experiments by 
periods is given in Table 9. 
Table 9. — Results of feeding soy beans grazed supplemented with a medium 
(2-2.5 per cent) ration of shelled corn, followed by corn and tankage, self -fed, 
free choice in dry lot 
SOY-BEAN GRAZING PERIOD 
Number of piss used 134 
Average number of days fed 50. 52 
Average initial weight pounds 110. 84 
Average final weight do 162. 34 
Average gain do 51. 50 
Average daily gain do 1. 02 
Feed consumed per 100 pounds gain (exclusive of soy beans) : Shelled corn do 325. 29 
Average percentage of shelled corn (based on weight of pigs) consumed daily_do 2. 43 
CORN-AND-TANKAGE FEEDING PERIOD 
Number of pigs used 98 
Average number of days fed 52. 32 
Average initial weight pounds — 159. 96 
Average final weight do 252.61 
Average gain do 92. 65 
Average daily gain do 1. 77 
Feed consumed per 100 pounds gain : n „ 
Shelled corn do 407. 24 
Tankage do 27. 67 
Mineral mixture (based on results from 56 hogs) do 7.61 
Total 442.52 
8 See footnote 7. 9 See footnote 5. 
