16 DEPARTMENT BULLETIN 1492, U. S. DEPT. OF AGRICULTURE 
hogs is given. Essential data pertaining to both the peanut-feeding 
period and the hardening period are given in Table 4. 
Table 4. — Results of feeding com and tankage self-fed, free choice, in dry loft 
following peanut s\ self-fed in dry lot 
PEANUT-FEEDING PERIOD 
Number of pigs used 30 
Average number of days fed - 56 
Average initial weight pounds — 116. 16 
Average final weight do 164.13 
Average gain do 47. 97 
Average daily gain do . 86 
Feed consumed per 100 pounds gain : 
Shelled peanuts do 310. 98 
Mineral mixture do 10. 77 
Total feed do 321. 75 
CORN-AND-TANKAGE-FEEDING PERIOD 
Number of pigs used 30 
Average number of days fed 134. 77 
Average initial weight pounds__ 164. 13 
Average final weight do 347. 60 
Average gain do 183. 47 
Average daily gain do 1. 36 
Feed consumed per 100 pounds gain : 
Shelled corn do 457. 03 
Tankage do 19. 99 
Mineral mixture do — __ 6. 09 
Total feed do 483. 11 
The rate of gain during the peanut-feeding period was below 
normal, while the quantity of feed consumed per 100 pounds gain 
was somewhat high. The rather low quality of the peanuts fed prob- 
ably accounts for the subnormal showing. The rate of gain and the 
quantity of feed consumed per 100 pounds gain during the hardening 
period were practically normal, considering the high initial and final 
weights of the hogs. 
B. CORN WITH TANKAGE FOLLOWING SOY BEANS 
Incomplete results of hardening hogs on corn with tankage after 
softening on soy beans were reported in Department Bulletin 1407 
{If). It was shown conclusively, however, that pigs beginning on 
soy beans at weights of from 85 to 114 pounds, inclusive, and making 
equal gains on the softening and hardening rations, usually do not 
produce firm carcasses. Further work has yielded additional data, 
and broader conclusions may now be stated. 
The Mississippi station and the Animal Husbandry Experiment 
Farm fed •the hogs in the experiments reported here. Four tests, 
extending oyer a period from the fall of 1921 to the spring of 1925, 
were conducted by each institution. The softening period in the 
different experiments varied from 6 to 8 weeks, while the hardening 
period varied from about 4 to 12 weeks. The initial weights of the 
78 hogs included in the report ranged from 85 to 160 pounds, inclu- 
sive. For the purpose of more clearly presenting the results the 78 
hogs were divided into two major groups according to initial 
weights. The weight limits of these two groups were from 85 to 
114 pounds, inclusive, and from 115 to 160 pounds, inclusive, the 
former group containing 43 hogs and the latter 35 hogs. 
