378 



DISEASES OF SWINE 



tion of the serum beneath the skin of the loose fold extending from 

 the inner side of the front leg to the chest-wall. Serum can be 

 administered here with comparatively httle danger of abscess 

 formation, and, if an abscess should form, it is in the loose con- 

 nective tissue, and is easily trimmed out without the loss of any 

 great amount of valuable meat. 



Back of Ears. — Another point for injection of serum that meets 

 with considerable favor among users of this line of treatment is 

 to inject the product in the loose tissues behind the ears. This 

 is an easy method of giving the treatment and one that is continu- 

 ally meeting with more and more favor. This location is especially 



Pig. 75. — Injecting serum behind shoulder (large hog). (Photo by Dr. Geo. 

 R. White.) 



advantageous in giving the treatment to large boars and pregnant 

 sows, as the injection can be made at this point with a very small 

 amount of handling. In giving the serum in either of these loca- 

 tions it is advisable, perhaps, to give a little larger dose than that 

 given when injection is made into the muscles of the thigh, as 

 absorption probably is not so good from the connective tissues as 

 from the muscles of the thigh. 



Orchitis in Boars. — Another objection to the use of the intra- 

 muscular injection in male hogs is the fact that in boars, if a severe 

 inflammation follows the injection of the serum, the swelling may 

 spread up the perineal region and involve the scrotum and produce 

 inflammation of the testicles. This very frequently leaves the 

 animal worthless for breeding purposes. 



