THM FEEDING OF SWINE 



473 



sive grain feeding account for much of the shy breeding among 

 many of the more prominent breeds. Hogs will Hve and breed 

 under such confinement, but greatest success cannot be attained 

 under these systems of management. Another serious mistake 

 is the too liberal use of corn. While no food equals corn for 

 fattening swine, it is not a good grain for the breeding ani- 

 mals, and its too exclusive use is a common cause of barren- 

 ness or of small litters. 



Fig. 163. — Duroc Jersey Boar. First prize, Wisconsin State Fair, 1908. 



The Duroc Jersey breed of swine is a native of the United States. This breed, 

 like the Poland China, is noted for its fat production and early maturing 

 qualities. The breeding qualities of the breed are considered good, as the sows 

 are fairly prolific. In size the breed is classed as medium. The color is red, 

 the ears drooping, and face straight. The breed is increasing in popularity 

 in America. 



Ample room should be provided. Nothing is better than 

 pasturing or soiling. Soiling is likely to involve too much labor 

 on the average American farm, but in such cases there is usually 

 an abundance of pasture. Sometimes hogs are denied the run 

 of a pasture because they require a rather tight fence, and if 



