Difference between revisions of "Contagious Footrot"
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(Created page with '**Usually caused by ''Bacteroides nodosus'' together with ''Fusobacterium necrophorum'' **Moisture and trauma allow ''B. nodosus'' to enter -> a…') |
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| + | Caused by ''[[Dichelobacter nodosus]]''. | ||
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| + | **Contagious, economically important disease | ||
| + | **Wet pasture and hydrated stratum corneum leads to colonisation by Gram positive cocci and [[Arcanobacter pyogenes|''Arcanobacter pyogenes'']], followed by ''F. necrophorum''; addition of ''D. nodosus'' causes footrot | ||
| + | **Can lead to loss of hoof | ||
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**Usually caused by [[Bacteroides|''Bacteroides nodosus'']] together with [[Fusobacterium|''Fusobacterium necrophorum'']] | **Usually caused by [[Bacteroides|''Bacteroides nodosus'']] together with [[Fusobacterium|''Fusobacterium necrophorum'']] | ||
**Moisture and trauma allow ''B. nodosus'' to enter -> aids bacterial penetration of epidermis -> ''F. necrophorum'' invades -> necrosis and inflammation | **Moisture and trauma allow ''B. nodosus'' to enter -> aids bacterial penetration of epidermis -> ''F. necrophorum'' invades -> necrosis and inflammation | ||
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***Chronic infections -> long , misshapen hoof | ***Chronic infections -> long , misshapen hoof | ||
**Benign footrot (scald)- only interdigital ski affected, slight separation of heel horn | **Benign footrot (scald)- only interdigital ski affected, slight separation of heel horn | ||
| − | ***Mostly the type occuring in cattle[[Category: | + | ***Mostly the type occuring in cattle |
| + | [[Category:To_Do_-_Clinical]] | ||
Revision as of 14:55, 28 July 2010
Caused by Dichelobacter nodosus.
- Contagious, economically important disease
- Wet pasture and hydrated stratum corneum leads to colonisation by Gram positive cocci and Arcanobacter pyogenes, followed by F. necrophorum; addition of D. nodosus causes footrot
- Can lead to loss of hoof
- Usually caused by Bacteroides nodosus together with Fusobacterium necrophorum
- Moisture and trauma allow B. nodosus to enter -> aids bacterial penetration of epidermis -> F. necrophorum invades -> necrosis and inflammation
- Grossly:
- Early lesions - red, moist, swollen, eroded interdigital skin
- Spreads to epidermal matrix of hoof -> separation of horn + malodorous exudate
- Regeneration attempted as germinal epithelium is not destroyed
- Chronic infections -> long , misshapen hoof
- Benign footrot (scald)- only interdigital ski affected, slight separation of heel horn
- Mostly the type occuring in cattle