36 



SWINE 



INFECTIOUS DISEASES OF SWINE 



Hog Cholera 



We find but two diseases that are apt to 

 cause a high mortahty in pigs. These are 

 hog cholera and necrobacillosis. Hog chol- 

 era is familiar to every swine raiser in the 

 corn belt section. No attempt will there- 

 fore be made to describe the symptoms. 



rapid course, causing death in a short time; 

 in other outbreaks it assumes a slow chronic 

 course. It is a difficult matter to form any 

 opinion as to the manner swine acquire the 

 disease. In many cases it is due to the 

 introduction on the premises of a diseased 

 animal; or by persons or dogs carrying the 

 infection. Only the smallest particle of mat- 

 ter is needed to convey the germ of this 



1 1 ^ 1 1 1 s I ^ liiiliiiii 



. cy^ /Voces' /y^/^/yo(5'C>yaL^/py4 



Like all epidemics, we have severe out- 

 breaks every so often, at which time the 

 disease seems to spread over the entire 

 country causing immense losses, gradually 

 dying out and remaining dormant for three 

 or four years. 



In some outbreaks the disease runs a very 



disease. Flies have a good deal to do with 

 its spread, much more so than any one 

 imagines. 



Treatment. Vaccination is now recog- 

 nized as being the most efficient. Large 

 doses of anti-hog cholera serum are given 

 the pigs with excellent results. 



DUROC JERSEY BOAR 



Native of United States; medium size. red. ears droop, face 

 straight; sows are prolific. This type noted for fat production. 



YORKSHIRE BOAR (Bacon Type) 



Native of England, medium size. The color is white, ears erect and 

 face greatly dished. Noted for fattening qualities. 



