HOG CHOLERA: PREVENTION AND 

 TREATMENT. 



CONTENTS. 



Tagc. 



Page. 



cholera' 



Modes of infection with hog cholera 



Keeping cholera off the farm by sanitation 



Prevalence 



Losses from hog cholera 



The cause of hog cholera 



Symptoms shown by hogs sick with cholera. . 

 Appearance of a hog after death from cholera. . 

 Diseases which may be mistaken for hog 



12 

 14 

 15 



3 

 3 

 6 



9 



Prevention by inoculation 



Method of administering serum 



Treatment of herds 



Effect of treatment on pregnant sows 



Treatment of young pigs 



Restocking after an outbreak of hog cholera. 



Tonic compound 



Conclusion 



10 

 18 

 25 

 27 

 29 

 33 

 30 

 31 



PREVALENCE. 



HOG CHOLERA, the most serious disease of hogs, is found in 

 practically all parts of the world. In this country it appeared 

 first in L833, in Ohio, and later spread to every State in the Union. 

 It is most prevalent in the States of the Middle West and of the 

 South, where hogs are raised in greatest numbers. The Pacific 

 Coast States remained practically free from hog cholera until recent 

 years, probably because of the limited production of hogs and their 

 limited importation from the infected districts of the country. 



In the South, where the winters are mild and the temperatures 

 more or less uniform, severe outbreaks of hog cholera may occur at 

 any season of the year, but from statistics collected from experiments 

 conducted in 14 States, principally in the Middle West, it has been 

 shown that the disease reaches its greatest height during October 

 and November. After this time it dies down rapidly, particularly 

 after snow falls, and reaches its lowest point during February. 



While hog cholera has been present in this country continually 

 for more than 50 years, it has been unusually prevalent in certain 

 periods. The first period of exceptional prevalence reached its cli- 

 max in 1887, the second in 1897, and the third apparently reached 

 its height in 1913 and 1914. During these periods the hog-raising 

 industry over the entire country suffered great losses and in some 

 localities was for a time practically destroyed. 



LOSSES FROM HOG CHOLERA. 



3 



