38 DEPARTMENT BULLETIN" 1492, U. S. DEPT. OF AGRICULTURE 
content was 17.2 per cent, while in 1926 it was 11.7 per cent. In the 
first case the carcasses graded an average of medium soft and in the 
second medium hard. In comparison of the two experiments it 
should be noted, however, that the gain on hardening feed in the 
1926 experiment was larger, but at the same time the hogs were 
softer at the beginning of the experiment. 
Table 19. — Average weights, gains, gradings, and refractive indexes of fat of 
AA hoax fed rice oran with supplements folio-wed oij corn with suppleme)its 
Item 
Arkansas, 
1925 
Iberia, 1926 
Arkansas, 
1926 
Iberia, 1925 
Missis- 
sippi, 
1924 
6 
78.5 
8 
65.5 
H 
S 
1. 4589 
1. 4609 
13.2 
14.0 
46 
72 
61.2 
12 
73 
43.3 
90 
103 
95.0 
87 
136 
118.1 
1.56 
2.60 
1.09 
1.70 
220.2 
0.90 
1.85 
214.9 
MH 
MS, 2 MH 
3H 
H 
8H 
1. 4595 
1. 4591 
1. 4597 
1. 4591 
General aver- 
age and 
summary 
Number of hogs 
Initial weight. .pounds . 
Check pigs: 
Grading * 
Refractive index 
(back fat) 
Fat percentage of rice 
bran 
Gain, rice-bran period: 
Minimum. pounds. 
Maximum do__. 
Average do... 
Gain, corn period: 
Minimum. pounds- 
Maximum do . . . 
Average do... 
Ratio of gains: 
Softening to harden- 
ing, 1 to 
Average daily gain— 
Rice-bran pe- 
riod., pounds. 
Corn period. _do... 
Slaughter weight-.do... 
Grading: l 
Average.. 
Distribution 
Refractive index at 
40° C.: 
Back fat 
Leaf fat 
841 
MS 
1.4600 
17.2 
19 
41 
31.0 
72 
123 
99.8 
3.23 
0.55 
1.78 
204.2 
MS 
1 S, 4 MS 
3 MH, 1 H 
1. 4600 
1. 4592 
13 
84.9 
MS 
1. 4592 
13.7 
43 
59 
51.3 
72 
119 
104.5 
2.02 
0.93 
1.88 
226.5 
MS 
8MS,4MH 
1H 
1. 4596 
1. 4592 
74.8 
S 
1. 4612 
11.7 
13 
40 
25.1 
145 
119.0 
0.45 
2.12 
208.0 
MH 
1 S, 2 MS 
4 MH, 1 H 
1, 4595 
1. 4590 
44 
78.50 
MS 
14.0 
2 12 
3 73 
42.27 
2 72 
3 145 
107. 34 
2.54 
0.75 
1.92 
215. 00 
MH 
2 S, 15MS 
13 MH, 14 H 
1. 4596 
1. 4591 
1 The initial letters = S, soft; MS, medium soft; MH, medium hard; H, hard. 
2 Actual minimum. 
3 Actual maximum. 
It is apparent that increasing ratios between gains in the softening 
and hardening periods do not always indicate increasing firmness. 
It usually does in cases of equal gains on softening feeds, but with 
greater gain on rice bran the decrease in softness following the early 
rise causes a shifting in the gain ratio necessary to get a certain 
degree of firmness. 
The distribution of grades in certain of the lots indicates the uncer- 
tainty of obtaining satisfactorily firm hogs with the feeding plan 
used in this work. The average figures on the 44 hogs show that 
a gain, on corn, of 2.5 times that on rice bran produced an average 
grading of medium hard. However, the general distribution of 
grades between medium soft, medium hard, and hard, together with 
the distribution among the individual experiments, indicates the gen- 
erally unsatisfactory results obtained. A total of 31 out of the 44 hogs 
gained 35 pounds or over on rice bran, or an average of 51 pounds. 
The gain on corn was 107 pounds, which is somewhat more than twice 
that on rice bran. The gradings show 19 hard and medium-hard and 
