Anaerobes: Clostridium & Fusobacterium

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Questions and Answers

Which disease is specifically associated with Clostridium piliforme?

  • Blackleg
  • Gas Gangrene
  • Foot Rot
  • Tyzzer's Disease (correct)

What pathological process is associated with Clostridium perfringens Type A?

  • Tyzzer's Disease
  • Equine Hoof Thrush
  • Blackleg
  • Muscle Necrosis (correct)

A cattle farmer notices swelling and crepitation in the muscles of several young animals. Which Clostridial species is most likely involved?

  • _Clostridium perfringens_ Type A
  • _Fusobacterium necrophorum_
  • _Clostridium chauvoei_ (correct)
  • _Clostridium piliforme_

Which of the following diseases is associated with Fusobacterium necrophorum in livestock?

<p>Foot Rot (C)</p> Signup and view all the answers

What common clinical sign is associated with both Blackleg and Gas Gangrene?

<p>Muscle Swelling (C)</p> Signup and view all the answers

What is a key difference between the diseases caused by Clostridium chauvoei and Clostridium perfringens Type A?

<p><em>C. chauvoei</em> causes muscle necrosis, while <em>C. perfringens</em> causes intestinal disease. (A)</p> Signup and view all the answers

In what animal would you expect to find Clostridium piliforme as a cause of clinical disease?

<p>Rodents (A)</p> Signup and view all the answers

Which of the following is NOT a typical characteristic used to identify anaerobic bacteria?

<p>Colony morphology on blood agar under aerobic conditions (C)</p> Signup and view all the answers

A farmer notices lameness and foul-smelling lesions on the hooves of their sheep. What is the most likely causative agent?

<p><em>Fusobacterium necrophorum</em> (D)</p> Signup and view all the answers

Which of the following conditions is LEAST likely to predispose an animal to an anaerobic bacterial infection?

<p>Aerobic environment (A)</p> Signup and view all the answers

Which of the bacteria listed are NOT Clostridium species?

<p><em>Fusobacterium necrophorum</em> (A)</p> Signup and view all the answers

What is the significance of identifying the type of Clostridium perfringens in a diagnostic sample?

<p>Different types produce different toxins and cause different diseases. (C)</p> Signup and view all the answers

How do anaerobic bacteria such as Clostridium species typically cause tissue damage?

<p>By producing potent toxins (A)</p> Signup and view all the answers

What is the primary habitat of anaerobic bacteria like Clostridium in the environment?

<p>Oxygen-depleted environments (D)</p> Signup and view all the answers

Which of the following is a common predisposing factor for the development of Blackleg in young cattle?

<p>Ingestion of contaminated soil (C)</p> Signup and view all the answers

Considering that Fusobacterium necrophorum contributes to foot rot, what management practice would be MOST effective in preventing its spread?

<p>Improved pasture drainage (B)</p> Signup and view all the answers

Why is early and aggressive wound management crucial when dealing with potential anaerobic bacterial infections?

<p>To introduce oxygen into the wound, inhibiting anaerobic growth (B)</p> Signup and view all the answers

How does damage to the intestinal lining contribute to the pathogenesis of diseases caused by Clostridium perfringens?

<p>It facilitates the translocation of toxins into the bloodstream (B)</p> Signup and view all the answers

In the context of identifying unknown bacteria, what characteristic is most helpful in distinguishing between Clostridium and Fusobacterium?

<p>Spore formation (A)</p> Signup and view all the answers

Based on the diseases and bacteria covered, what is a commonality in the habitat or environment where these organisms are likely to thrive?

<p>Anaerobic conditions (B)</p> Signup and view all the answers

Flashcards

Clostridium chauvoei

An anaerobic bacteria species that causes blackleg, a disease characterized by gas gangrene in cattle and sheep.

Clostridium perfringens Type A

An anaerobic bacteria species that is a common cause of gas gangrene and food poisoning. Type A is the most common type, producing alpha-toxin.

Clostridium piliforme

An anaerobic, spore-forming bacteria that causes Tyzzer's disease, primarily affecting rodents, rabbits, foals, and occasionally other animals. It causes liver and intestinal lesions, leading to diarrhea, dehydration, and death.

Fusobacterium necrophorum

An anaerobic bacteria species is a primary agent in foot rot in livestock, causing lesions and tissue necrosis in the hooves. Also causes Equine hoof Thrush.

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Study Notes

  • Anaerobes are highlighted

Clostridium chauvoei

  • Isolation and identification of Clostridium chauvoei from cattle occurred in Mymensingh, Bangladesh

Clostridium perfringens Type A

  • Clostridium perfringens Type A causes muscle necrosis and gas gangrene, which is histotoxic

Clostridium piliforme

  • Clostridium piliforme produces Tyzzer's Disease

Fusobacterium necrophorum

  • Fusobacterium necrophorum is the cause of foot rot and equine hoof thrush

Gram Negative Review

  • Gram-negative bacteria cause canine infectious respiratory disease (CIRD).
  • The Pasteurellaceae family includes three bacteria.
  • Gram-negative bacteria cause pink eye in cattle.

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