828 
IOWA ACADEMY OF SCIENCE 
The litter weights upon the above three rations are respectively 17.06 
pounds on corn alone, 24.42 pounds where meat meal was added and 
19.50 where oil meal was the supplement. 
That the character of coat should be changed by the ration 
evident from a survey of the following figures: 
« 
is clearly 
COAT CHARACTER.* 
(In Percents.) 
Ration 
Corn only 
Corn + Meat Meal 
Corn + Linseed Oil MeaL 
*Based on hair quantity. 
Heavy 
53 
82 
88 
Medium 
33 
15 
8 
Light 
14 
3 
4 
Oil meal has been noted from time immemorial as a coat producer, 
The data speak well for this time honored tradition. That both meat 
meal and oil meal should ' increase the coat as well as the color of the 
skin we who took the data anxiously affirm. 
The coats were heavier, darker colored and more dense where the 
supplements were allowed than where corn alone was used. 
That the size of bone should likewise be affected we were privileged 
to see. This data is presented : 
SIZE O'F BONE. 
(Centimeters.) 
Circumference of 
Ration Front Shin Hind Shin 
Corn only 4.63 4.39 
Corn + Meat Meal 5.05 4.83 
Com + Linseed Oil Meal 4.92 4.67 
That meat meal should produce a larger bone than oil meal is quite 
interesting. That the corn alone pigs should have the smallest bone is 
not particularly surprising. 
Although we have three years’ work with ewes and their offspring we 
are presenting the results for 1911-12 only. These show a general tend- 
ency of the ration to affect in some manner the size and vigor of the 
offspring although the differences are not so marked as where swine are 
fed entirely upon grain. It is interesting to note in the table which 
follows that the entire corn plant, as found in silage, fed in conjunction 
with the corn grain tends to produce quite vigorous offspring. This 
is largely due, of course, to the fact that silage overcomes some of the 
deficiencies of the corn grain. 
