42 



Pork Production 



studies made by John M. Evvard, of the Iowa Experi- 

 ment Station, are extremely pointed and full of practi- 

 cal instruction in this connection. Following is a tabu- 

 lated statement of the results secured when corn alone was 

 compared with corn plus different kinds of commercial 

 supplements when fed during the pregnancy period to 

 yearling sows : 



TABLE III. STRAIGHT CORN VERSUS CORN AND A SUPPLE- 

 MENT (Iowa Experiment Station). TEN YEARLING Sows 

 IN EACH LOT 1 



Proc. American Society of Animal Production, 1913. 



