The Prevention of Hog Diseases 463 



few years ago, they now appreciate the value of the pro- 

 tection that these laws have given the swine industry. 



In order to prevent the spread of communicable dis- 

 eases, an early diagnosis is necessary. If stock-men had 

 a better knowledge of this class of disease, they would 

 be able to practice control measures at a time when the 

 most good could be accomplished. In case a disease is 

 believed to be infectious, a veterinarian should be called 

 for the purpose of diagnosis, and if it proves infectious 

 he should notify the proper health officer. 



Most infectious diseases can be controlled by quaran- 

 tining the exposed and sick animals on the premises where 

 the outbreak occurs. However, in the control of tubercu- 

 losis it is necessary to slaughter tubercular hogs. Stock- 

 men should voluntarily comply with quarantine regula- 

 tions recommended by the Federal and state health 

 officers. A man who sells cholera hogs to his neighbor in 

 order to escape personal loss is pursuing a very short- 

 sighted policy. In selling diseased animals he violates 

 the laws of his state, perpetuates hog cholera in his com- 

 munity, and makes it necessary to keep his hogs immu- 

 nized against cholera. 



DISEASES OF THE DIGESTIVE SYSTEM 



Stomatitis or sore mouth. 



The two forms of inflammation of the mouth are the 

 simple and the ulcerative. The simple form of the 

 disease is met with in young and mature hogs, and the 

 ulcerative in young pigs. 



Simple inflamation of the mouth is usually caused by 

 irritation from hot or decomposed feeds and feeds contain- 

 ing irritating substances. Treating hogs with irritating 



