Difference between revisions of "Contagious Footrot"
| Line 9: | Line 9: | ||
==Description== | ==Description== | ||
| − | + | It is an economically important disease causing lameness in sheep. The disease is associated with under-running of the hoof and a typical 'odour'. Footrot is caused by [[Dichelobacter nodosus|''Dichelobacter nodosus'']] together with [[Fusobacterium|''Fusobacterium necrophorum'']]. | |
| − | Moisture and trauma allow''F. necrophorum'' to enter which aids bacterial penetration of the epidermis by ''D. nodosus'' | + | Moisture and trauma allow''F. necrophorum'' to enter which aids bacterial penetration of the epidermis by ''D. nodosus'' resulting in necrosis and inflammation. Carrier animals are a major source of infection and are difficult to find as they are often sub clinical cases. |
| − | + | ||
==Signalment== | ==Signalment== | ||
| Line 30: | Line 30: | ||
Regeneration is attempted as germinal epithelium is not destroyed. | Regeneration is attempted as germinal epithelium is not destroyed. | ||
Chronic infections can result in a long misshapen hoof. | Chronic infections can result in a long misshapen hoof. | ||
| − | + | Benign footrot (scald)- only interdigital skin affected, slight separation of heel horn | |
| − | + | Mostly the type occuring in cattle | |
| + | |||
| + | |||
| + | ==Treatment== | ||
| + | A single dose of [[Antibiotics|antibiotics]] ideally penicillin or oxytetracycline. | ||
| + | ==Prognosis== | ||
| + | |||
| + | ==References== | ||
[[Category:To_Do_-_Caz]] | [[Category:To_Do_-_Caz]] | ||
Revision as of 11:47, 5 August 2010
 |
This article is still under construction. |
| Also known as: | Scald |
Description
It is an economically important disease causing lameness in sheep. The disease is associated with under-running of the hoof and a typical 'odour'. Footrot is caused by Dichelobacter nodosus together with Fusobacterium necrophorum. Moisture and trauma allowF. necrophorum to enter which aids bacterial penetration of the epidermis by D. nodosus resulting in necrosis and inflammation. Carrier animals are a major source of infection and are difficult to find as they are often sub clinical cases.
Signalment
Affects sheep, particularly those kept in wet warm conditions.
Diagnosis
Can be made on a history of lameness and rapid spread amongst the flock in combination with clinical signs.
Clinical Signs
Lameness is often the first clinical sign to be noted and can vary in severity. Under-running of the horn is present and there is often a necrotic discharge which causes the characteristic foul 'odour'.
Pathology
Grossly: Early lesions are red, moist, swollen and interdigital skin is eroded. This spreads to epidermal matrix of the hoof leading to separation of the horn and malodorous exudate. Regeneration is attempted as germinal epithelium is not destroyed. Chronic infections can result in a long misshapen hoof. Benign footrot (scald)- only interdigital skin affected, slight separation of heel horn Mostly the type occuring in cattle
Treatment
A single dose of antibiotics ideally penicillin or oxytetracycline.