True/False: non- spore forming anaerobes can survive for long periods of time in the environment
Only can survive a few days
Non spore forming anaerobes are usually part of _____
*Normal inhabitants of the GI tract
These bacteria create necrotic areas in the animal as well as ____ production
True/False: Capsule and cell wall helps the bacteria to grow inside the host to avoid some innate immune responses and produce necrotic areas that are useful for them to surivive
Gram negatives have ____ in their cell wall, while Gram positive organisms have ____ in the cell wall
Gram negative- LPS
Gram positive- Peptidoglycan
Pathogenesis of non spore forming anearboes
1. Find injury in the foot area, colonize and start producing lesions
2. Reduction of oxygen in tissue
3. Synergistic repsonse between these bacteria and facultative anaerobes
What are of the body do non spore forming anaerobes normally infect?
Non spore forming anaerobes are ____ anaerobes
*Why they infect the feet because it has low oxygenation
Best to use ____ containing media
Treatment for non spore forming anaerobes
drainage and use of antimicrobial agents
Dichelobacter nodosus and Fusobacterium necrophorum are the causative agents of ____
Footrot in sheep and goats
*lesions causing crippling lameness
Dichelobacter Nodosus and Fusobacterium are gram _____
Fusobacterium necrophorum is an important causative agent of liver abscesses, necrotic rhinitis, and diphteria in what species?
Pathogenesis of Foot Rot
1. interdigital epidermis is damaged
2. inflammation and necorsis of the foot
3. lameness of feet. Affected animals cannot walk
(secondary infection can occur with D. nodosus or F. necrophorum)
Fusobacterium necrophorum can also cause abscesses in what organ of the body?
What can the farmer use to help prevent foot rot?
Foot rot is more common in areas that are ___ all the time
What will you see if you look at Dichelobacter nodosus under the microscope?
Gram negative with swollen ends at both sides
What is the best treatment for Fusubacterium necrophorum?
Clean the area well and give systemic antibiotics
Try to keep animals dry