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Diseases of the nasal cavity and sinuses (view source)

Revision as of 10:13, 14 May 2010

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**2 forms of the disease

***'Progressive' atrophic rhinitis

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****Due to infection of the nasal turbinates by P.multocida strains carrying the toxA gene that encodes for an osteolytic toxin. ''P.multocida'' adheres poorly to mucous membranes, and therefore requires a predisposing nasal insult to assist colonisation eg: co-infection with ''B.~~bronchoseptica~~''; or Porcine cytomegalovirus (inclusion body rhinitis)

+

****Due to infection of the nasal turbinates by P.multocida strains carrying the toxA gene that encodes for an osteolytic toxin. ''P.multocida'' adheres poorly to mucous membranes, and therefore requires a predisposing nasal insult to assist colonisation eg: co-infection with ''B.bronchiseptica''; or Porcine cytomegalovirus (inclusion body rhinitis)

****Turbinate bone atrophy is permanent and progressive

***'Non-progressive' atrophic rhinitis

−

****Due to infection of the nasal turbinates by ''Bordatella ~~bronchoseptica~~'' strains alone, that carry a gene that encodes for a dermonecrotic toxin.

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****Due to infection of the nasal turbinates by ''Bordatella bronchiseptica'' strains alone, that carry a gene that encodes for a dermonecrotic toxin.

****Turbinate bone can regenerate by the time of slaughter

**'Snuffles' in rabbits

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****Most often ''P.multocida'' and/or ''B.~~bronchoseptica~~'' infection of the nasal mucosa

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****Most often ''P.multocida'' and/or ''B.bronchiseptica'' infection of the nasal mucosa

****Clinical signs (nasal discharge, sneezing) result from an acute to chronic rhinitis.

[[:Category:RVC]], [[:Category:R(D)SVS]], [[:Category:CUVS]], [[:Category:PG]],

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