PREVENTION OF DISEASE. 295 



such troubles, we must pay due attention to the vigor and 

 constitution of the animal. Too much stress cannot be laid 

 upon constitution and vigor in selecting stock for breeding 

 purposes. Animals which are strong in constitution can 

 always withstand disease much better than those which are 

 weak in this respect. Constitution is indicated by the width 

 and depth of the chest, by width of head and general active- 

 ness on the part of the animal. In case hogs are troubled 

 with disease it is next to impossible to give them medicine 

 or anything else which will prove very helpful. About the 

 only thing that seems to be feasible is to feed a ration which 

 can be easily digested, keep them in clean quarters, thorough- 

 ly disinfect the pens, and let the disease run its course. 



For hogs which are very sick from disease of any kind 

 perhaps no kind of feed is more palatable and easily digested 

 than whole milk. It is an excellent feed and has oftentimes 

 proven to be very beneficial in bringing hogs through a 

 spell of sickness. Next to the whole milk comes skim-milk 

 and oat meal or a little shorts. They must not be fed too 

 much grain. The ration must be thin, and the more milk 

 supplied the better the chances for their recovery. 



