116 MASTITIS OF THE COW 



2. Udder-Infection: Udder-actinomycosis. 



Stroma-infection [interstitial mastitis]. 



Ports of infection : teat canals, wounds and blood. 

 Local conditions. 



Primary actinomycoma. 



Metastasis : regional, lymphogeneous and haematogen- 



ous metastasis as well as galactogenous metastasis. 

 Development of actinomycomata. 

 Secondary alterations of actinomycomata. 



Softening and encapsulation. 

 Ulceration of milk-ducts. 

 Ulceration of blood-vessels. 

 Ulceration through the skin. 

 Types : 



1. Primary udder-actinomycosis. 



a. By teat-infection. 

 h. By wound-infection. 



2. Secondary or embolic udder-actinomycosis. 

 Secondary infection. 



1. By the teat canal. 



2. By wounds. 

 Saprophytic invasion. 



1. Milk-gangrene. 



2. Wound-gangrene. 

 General conditions. 



Blood-infection. 



Intoxication. 

 Termination. 

 Clinical symptoms. 

 Prognosis. 

 Treatment. 



Prophylaxis. 



Actual treatment. 



