sept. 2 , i 9 i8 Comparative Toxicity of Cottonseed Products 
447 
soluble in ether. Probably the same holds true of oil extraction. McCol¬ 
lum has found that the refined oil lacks the growth-promoting constituent 
but the refined oil has been treated in ways which might remove this 
constituent. Richardson and Green ( 12 ) state that the ether extract 
of cottonseed flour contains this fat-soluble growth-promoting factor. 
Table XI .—Weight record of pigs on various diets 
Feed compared. 
Ani¬ 
mal 
No. 
Weight. 
Gain. 
Remarks. 
Initial. 
Final. 
Gain. 
f I 
Lbs. 
92. 0 
75 -o 
66. 0 
Lbs. 
128. O 
Lbs. 
36. 0 
5 
10. 0 
Per ct. 
Sick 56th day. 
Do. 
Cottonseed meal, long- 
cooked. 
a 
86. s 
76. 0 
1 3 
Died 47th day. 
Average. 
77 - 7 
96. 8 
19. 2 
24. 7 
f 4 
72. O 
68. 0 
76 . 5 
73 -o 
105* 5 
4-5 
c. 0 
Died 56th day. 
Died 52d day. 
Sick 56th day. 
Cottonseed meal, short- 
cooked. 
I? 
93 ° 
12. 5 
Average. 
77*7 
85.0 
7-3 
9*4 
\l 
67. 0 
117. 0 
5 °-° 
118. 0 
51-0 
^ 3 - 5 
33-5 
Soybean meal. 
200.5 
83-5 
1 9 
Slaughtered. 
Average. 
78. 0 
134.0 
56.0 
71. 8 
fio 
X14. 0 
60. 0 
179.0 
u8.0 
65. 0 
58. 0 
40. 0 
Peanut meal.. 
Li 
|l 2 
60. 0 
100. 0 
Average.. 
78. 0 
I 3 2 - 3 
54-3 
69.6 
I 13 
14 
Us 
86. 0 
133 - 0 
146. 0 
96. 0 
47-0 
56. O 
34- 0 
Ether-extracted cotton¬ 
seed kernels. 
90. 0 
62. 0 
Average. 
78.7 
125. 0 
45 - 7 
5 s - 0 
Cottonseed meal, long- 
cooked, butter, meat 
scrap, and salt mixture. 
f 16 
96. 0 
6^. 0 
77.0 
j6t. 0 
65.0 
37 -o 
29. O 
Sick 75th day. 
Died 76th day. 
Died 56th day. 
I 17 
Us 
102. 0 
106. 0 
Average. 
78.7 
123. 0 
43 - 7 
55 - 5 
Cottonseed meal, long- 
cooked, plus 10 per 
cent milk powder. 
(2 
88. 0 
143. 0 
93 - 0 
127. 0 
55 -o 
39 -o 
48. 0 
Sick 62d day. 
Died 52d day. 
Died 59th day. 
68. 0 
l« 
79.0 
Average. 
78-3 
121. 0 
44.0 
56. 2 
The chief chemical difference between cottonseed meal and ether- 
extracted cottonseed kernels seems to be, then, the presence of gossypol, 
or the decomposition products of gossypol, to which cottonseed-meal 
poisoning in swine appears to be due. 
It will be noted (fig. 5) that pigs receiving the meal in the supple¬ 
mented diets ate much more meal and made the best average gains. 
