UDDER-TUBERCULOSIS 105 



Summary 



1. Infectious organism: tubercle bacillus. 

 Occurrence. 



Resistancy. 

 Experimental mastitis. 



2. Udder-infection: udder-tuberculosis. 

 Stroma-infection. 



Ports of infection : blood, wounds and teat canals. 

 Local conditions. 

 Primary tubercles. 



Distribution: regional, lymphogenous, hagmatogenous 

 distribution as well as distributed by the milk. 

 Growth of tubercles. 



Alteration of necrosis. Colliquation and calcification. 

 The tubercles cause stagnation of the blood and the milk. 

 Ulceration of the milk-ducts (milk-infection). 

 Ulceration of the blood-vessels (blood-infection). 

 Ulceration through the skin or into wounds. 

 Types : 



1. Primary udder-tuberculosis. 



a. By teat-infection. 

 6. By wound-infection. 



2. Secondary or embolic udder-tuberculosis. 

 Secondary infections : 



a. By the teat canals. 

 h. By wounds. 

 Saprophytic invasions : 



a. Milk-gangrene. 

 h. Wound-gangrene. 

 General conditions : 

 Blood-infection. 

 Intoxication. 

 Termination. 

 Intoxication. 

 Clinical symptoms. 



Microscopical diagnosis. 

 Possible errors. 



Rules for collection of milk samples. 

 Treatment. 



