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16 Cards in this Set
- Front
- Back
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Ovine Interdigital Dermatitis
Cause? |
Fusobacterium necrophorum
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Fusobacterium necrophorum
Gram stain Shape Air usage |
Gram -
Rod Obligate Anaerobe |
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Fusobacterium necrophorum
Virulence factors |
Cell wall endotoxin (LPS)
Leukotoxin |
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Fusobacterium necrophorum
Natural environment |
Mucus membranes
GI tract (mouth, rumen, etc.) Can survive in soil for up to 10 months |
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Ovine footrot (contagious footrot of sheep)
Cause? |
Dichelobacter nodosus
+ spirochetes and A. pyogenes |
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Dichelobacter nodosus
Gram stain Air status |
Gram -
Obligate anaerobe |
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Dichelobacter nodosus
Virulence factos |
Adhesin: fimbriae
Extracellular proteases (exotoxin) LPS |
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Dichelobacter nodosus
Natural environment |
Obligate pathogen (other infected animals)
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Strawberry footrot
Cause? |
Dermatophilus congolensis
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Dermatophilus congolensis
Gram stain Shape Air status |
Gram + rod/filamentous
Aerobic |
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Dermatophilus congolensis
Natural Environment |
Obligate pathogen (infected animals)
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Dermatophilus congolensis
Diseases |
Strawberry footrot
Greasy heel Rain scald Rain rot Lumpy wool |
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Interdigital dermatitis (cattle)
Cause? |
Dichelobacter nodosus
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Bovine Footrot (interdigital necrobacillosis)
Cause? |
Fusobacterium necrophorum
+Prevotella melaninogenica and A. pyogenes |
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Fusobacterium necrophorum
Diseases |
Bovine footrot
Hepatic abscesses Necrotic laryngitis of calves Necrobacillosis, necrotic rhinits, stomatitis in swine Thrush in horses |
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Digital dermatitis (cattle) aka papillomatous digital dermatitis, hairy heel warts, strawberry foot
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Fusobacterium necrophorum +P. melaninogenica and spirochetes
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