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16 Cards in this Set

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