132 SWINE DISEASES 



those described for botryomycosis under the heading 

 "Sequels of Castration," on page 122. Prognosis should 

 always be guarded in those cases in which the mammary 

 gland is removed, as a large percentage of the animals 

 die. 



Actinomycotic Mammitis 



Actinomycotic mammitis, in the experience of the 

 writer, is more common in swine than botryomycotic 

 mammitis. Infection occurs through abrasions of the 

 skin surface. This condition is most common in swine 

 that are in pasture in stubble fields. The lesions are the 

 same as lesions of actinomycosis of any soft tissue and 

 consist of a dense surrounding capsule of fibrous tissue 

 inclosing multilocular communicating centers containing 

 a tenacious, granular, creamy-white pus. The actinomy- 

 cotic tumefaction may become eroded and the tyical 

 actinomycotic pus discharged. Actinomycotic mam- 

 mitis is characterized by the presence of the tumefaction, 

 which may be round and have a smooth surface or it 

 may be tabulated. These tumefactions vary in size 

 from that of a small marble to masses larger than a 

 baseball. 



Ablation of the entire tumor is the most rational 

 and successful manner of combating and relieving this 

 trouble. 



Tuberculous Mammitis 



Tuberculous mammitis is relatively common in 

 swine. The infection of the mammae may be due to a 

 diseased condition elsewhere in the body or it may be 

 introduced through wounds from the outside. 



The lesions are the same as other tuberculous lesions. 



Treatment. If the infection is localized in the 

 mammae the disease may be successfully treated by 

 operation, but the safest and most sanitary plan is 

 destruction of the animal and cremation of the carcass, 

 thereby diminishing the possibility of spreading the 

 infection. 



