DISEASES OF SWINE 



515 



liquid part of the blood separated from the clot. Then add suffi- 

 cient carbolic acid to make a one-half per cent solution; that is, 

 if there is 500 c.c. of the scrum, add 2V^ c.c. of carbolic acid. 



Use of the serum. — There are two methods of using the 

 serum for the prevention of hog cholera: the serum-alone 

 method, in which the serum only is used; and the serum- 



Fig. 176. — Fih.st Prize T.\.mworth Sow at Illinois Fair. 



The Tamworth breed of swine is a native of England. This breed is similar to 

 the Large Yorkshire and is noted for bacon production. The qualitj' of pork 

 is unexceled, although the animals are rather late maturing. The breeding 

 qualities are excellent, the sows being very prolific. The breed is classed as 

 large. The color is red or sandy, the cars almost erect and the face long and 

 straight. 



simultaneous method, in which the serum and virulent blood 

 from a hog infected with cholera are used. 



Seriun-alone method. — With the hypodermic syringe, inject 

 into the arm and thigh pits 20 c.c. of serum for each 100 pounds 

 weight of pig. That is, if the pigweighs 50 pounds, inject 10 c.c. 



