USE OF SERUM IN HOG-CHOLERA 



379 



Handling Large Hogs for Injection. — In handling large hogs 

 for injection of serum it is not possible to hold them in the man- 

 ner just described for pigs and small shoats. The hog is caught, 

 thrown on the ground, and held on his back by one or two assist- 

 ants. The skin is then cleaned, either on the inner side of the 

 thighs, inside the foreleg, or back of the ears, and the serum injected 

 with the 30-c.c. syringe, as previously described. 



Fig. 76. — Injecting serum behind ear of large hog. (Photo by Dr. Geo. R. 



White.) 



In large hogs, where it is necessary to use more than 30 c.c. 

 of serum, it is advisable to use a clean needle with each injection, 

 and it is often a good plan to use more than one site for injection. 

 For instance, 30 c.c. can be given on the inner side of one front 

 leg, and the other 30 c.c. back of the ear, on the same or the oppo- 

 site side, or in the thigh. 



Where the double treatment is being given, it is advisable to 

 give the serum on one side and inject the virus on the opposite 

 side. This will be again mentioned under the head of Double 

 Treatment. Never mix serum and virus before injection. 



