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Category:Enteritis, Catarrhal (view source)

Revision as of 13:43, 1 June 2010

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* Internally, the mucosa is oedematous with a mucoid appearance.
 
* Internally, the mucosa is oedematous with a mucoid appearance.
 
* The exudate is initially thin and watery (i.e. serous).
 
* The exudate is initially thin and watery (i.e. serous).
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** The exudate becomes more mucoid and cellular as the condition progresses.[[Image:trichuris ovis.jpg|thumb|right|150px|Trichuris ovis in the sheep caecum (Courtesy of Bristol BioMed Image Archive)]]
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** The exudate becomes more mucoid and cellular as the condition progresses.
 
*** Mucus coats the epithelial surface of the gut.
 
*** Mucus coats the epithelial surface of the gut.
 
** As polymorphs enter the bowel contents, they may become quite opaque (i.e. mucopurulent).   
 
** As polymorphs enter the bowel contents, they may become quite opaque (i.e. mucopurulent).   
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** Mucosa may appear quite shiny.
 
** Mucosa may appear quite shiny.
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==Parasites==
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==[[Enteritis, Parasitic]]==
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[[Image:trichuris vulpis caecum.jpg|thumb|right|150px|Trichuris vulpis in the caecum (Courtesy of Bristol BioMed Image Archive)]]
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* This is the most important condition causing cattarhal enteritis worldwide.
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* Seen mainly in grazing animals.
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** Especially in sheep - causes large production losses. 
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* Particularly problematic since some parasites are resistant to anthelmintics.
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** Especially in Australia.
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** e.g. [[Nematodirus|''Nematodirus'']] and [[Trichuris|''Trichuris'']].[[Image:trichuris vulpis caecum comparative.jpg|thumb|right|150px|Comparison- caecum unaffected and affected by Trichuris vulpis (Courtesy of Bristol BioMed Image Archive)]]
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* A pre-patent period of 7-10 days is followed by the development of greenish [[Intestine Diarrhoea - Pathology|diarrhoea]].
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** The gut becomes filled with greenish soupy material.
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** Oedema and hyperaemia of mucosa occurs.
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* In young animals, parasites can cause serious disease and even death.
      
==Mixed viral enteritis==
 
==Mixed viral enteritis==
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