42 



Pork Prodtwtion 



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 com 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. 



