EESULTS OF SOFT-PORK INVESTIGATION'S. II 
19 
brown. Mineral mixture 6 was self-fed to a total of 20 hogs in the 
1923 and 1924 experiments at the Beltsville station, whereas the other 
102 hogs received no supplement while grazing the soy beans. The 
results from the 20 hogs do not justify separate or comparative pre- 
sentation, and they are included with the others in this summary. 
Mineral mixture 6 was self-fed, free choice, with corn and tankage 
during the hardening period of all Beltsville experiments. In the 
Mississippi experiments mineral mixture was not used. The grazing 
periods in the experiments varied from 42 to 56 days in duration, 
while the hardening periods ranged from 26 to 85 days owing to the 
successive killings. A summary of the feeding results from these 
experiments by periods is given in Table 6. 
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-Hardening on corn with tankage following softening on soy beans. Initial 
weights of pigs, 115 to 160 pounds 
-Results of feeding com and tankage self-fed, free choice, 
following soy beans grazed 
dry lot 
SOY-BEAN GRAZING PERIOD 
Number of pigs used 122 
Average number of days fed 50. 14 
Average initial weight pounds 109. 61 
Average final weight do 140. 68 
Average gain do 31. 07 
Average daily gain do . 62 
CORN-AND-TANKAGE FEEDING PERIOD 
Number of pigs used 98 
Average number of days fed 52. 61 
Average initial weight pounds — 140. 47 
Average final weight do 236. 19 
Average gain do 95. 72 
Average daily gain do 1. 82 
Average feed consumed per 100 pounds gain : 
Shelled corn , pounds__ 401. 02 
Tankage do 23.40 
Mineral mixture (based on results from 62 hogs) do 6.69 
Total feed do 431. 11 
6 See footnote 5. 
