Changes

'''Tuberculosis''' in cattle is caused by ''[[Mycobacterium bovis]]''. It is a chronic disease characterised by granulomatous nodular lesions in any organ, although the respiratory system is most commonly affected. The nodules often become necrotic with a caseous centre. The primary lesions may disseminate to involve other body systems.  

'''Tuberculosis''' in cattle is caused by ''[[Mycobacterium bovis]]''. It is a chronic disease characterised by granulomatous nodular lesions in any organ, although the respiratory system is most commonly affected. The nodules often become necrotic with a caseous centre. The primary lesions may disseminate to involve other body systems.  

Inhalation of ruminal gases is the most common route of entry for the mycobacterium organism, and spread of the disease is usually via cow-to-cow contact. Cattle can also become infected by ingestion of the causative agent; this is the usual route of entry when the badger is involved, by infecting grazing land or water troughs. Calves with infected dams can become affected via the milk, and intrauterine infection at coitus has been reported.  

Inhalation of ruminal gases is the most common route of entry for the mycobacterium organism, and spread of the disease is usually via cow-to-cow contact. Cattle can also become infected by ingestion of the causative agent; this is the usual route of entry when the badger is involved, by infecting grazing land or water troughs. Calves with infected dams can become affected via the milk, and intrauterine infection at coitus has been reported.  

* Dull areas on auscultation of the lungs in advanced cases

* Dull areas on auscultation of the lungs in advanced cases

====Alimentary form===

====Alimentary form====

* Few clinical signs=

* Few clinical signs

* Diarrhoea

* Diarrhoea

* Bloat

* Bloat

Poor.

Poor.

 

==References==

==References==

* Blood, D.C. and Studdert, V. P. (1999) '''Saunders Comprehensive Veterinary Dictionary (2nd Edition)''' ''Elsevier Science''

* Blood, D.C. and Studdert, V. P. (1999) '''Saunders Comprehensive Veterinary Dictionary (2nd Edition)''' ''Elsevier Science''

 

 

 

[[Category:Cattle]][[Category:To_Do_- lizzyk]]

[[Category:Cattle]][[Category:To_Do_- lizzyk]]

[[Category:Respiratory_Bacterial_Infections]]

[[Category:Respiratory_Bacterial_Infections]]

[[Category:zoonoses]]

[[Category:zoonoses]]