Changes

===Tuberculosis in dogs===

===Tuberculosis in dogs===

*Dogs are rarely susceptible to [[Mycobacteria spp.|''Mycobacterium'' spp.]] causing tuberculosis [[Respiratory Bacterial Infections - Pathology#Tuberculosis|in cattle]], usually either from human or farm animal source

*Dogs are rarely susceptible to [[:Category:Mycobacterium species|''Mycobacterium'' spp.]] causing tuberculosis [[Respiratory Bacterial Infections - Pathology#Tuberculosis|in cattle]], usually either from human or farm animal source

*Gross pathology:

*Gross pathology:

**Multifocal nodules, firm, calcified with necrotic centres

**Multifocal nodules, firm, calcified with necrotic centres

[[Image:Tuberculosis M bovis.jpg|right|thumb|100px|<small><center>Tuberculosis caused by ''M. bovis'' (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]

[[Image:Tuberculosis M bovis.jpg|right|thumb|100px|<small><center>Tuberculosis caused by ''M. bovis'' (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]

*Caused by [[Mycobacteria spp.|''Mycobacteruim bovis'' and ''M. tuberculosis'']]

*Caused by ''[[Mycobacteruim bovis]]'' and ''M. tuberculosis''

*Reside primarily within macrophages where they multiply and result in characteristic [[Lungs Inflammatory - Pathology#Granulomatous pneumonia|granulomatous inflammation]] (macrophages and giant cells, epithelioid cells)

*Reside primarily within macrophages where they multiply and result in characteristic [[Lungs Inflammatory - Pathology#Granulomatous pneumonia|granulomatous inflammation]] (macrophages and giant cells, epithelioid cells)

*Cattle can be infected by inhalation of the organism or through milk

*Cattle can be infected by inhalation of the organism or through milk

===Tuberculosis in pigs===

===Tuberculosis in pigs===

*Pigs are susceptible to the [[Mycobacteria spp.|''Mycobacterium'' spp.]] causing tuberculosis [[Respiratory Bacterial Infections - Pathology#Tuberculosis|in cattle]]

*Pigs are susceptible to the [[:Category:Mycobacterium species|''Mycobacterium'' spp.]] causing tuberculosis [[Respiratory Bacterial Infections - Pathology#Tuberculosis|in cattle]]

*Rarely extends to lungs after haematogenous spread from ingested bacteria causing tubercles with various degrees of calcification, encapsulation and caseation

*Rarely extends to lungs after haematogenous spread from ingested bacteria causing tubercles with various degrees of calcification, encapsulation and caseation