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ICC: Farm Animal > FASH5: Sudden Death in Sheep > Flashcards

FASH5: Sudden Death in Sheep Flashcards

1
Q

Define sudden death.

A

Death that occurs since the last inspection

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2
Q

What are the causes of sudden death?

A
  • Clostridial disease
  • Redgut
  • Systemic pasteurellosis
  • Ruminal acidosis
  • Plant toxicity
  • Acute liver fluke
  • Trauma
  • Nematodirosis
  • Coccidiosis
  • Haemonchosis
  • Bloat
  • CCN
  • Hypomagnesaemia
  • Copper toxicity
  • Nitrate/nitrite poisoning
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3
Q

What are the clostridial diseases in sheep?

A
  • Lab dysentery
  • Pulpy kidney
  • Struck
  • Tetanus
  • Blackleg
  • Malignant Oedema
  • Black disease
  • Brazy
  • Abomasitis
  • Botulism
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4
Q

What is the clostridial agent of pulpy kidney?

A

C. perfringens

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5
Q

What causes pulpy kidney?

A

Epsilon toxin leading to haemorrhage and oedema in multiple tissues

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6
Q

What is the clostridial agent for struck?

A

C. perfringens

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7
Q

What is the clostridial agent of abomastitis?

A

C. sordelii

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8
Q

How do you prevent abomastitis?

A

Avoid rapid changes in dietary carbs

Vaccinate

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9
Q

What is the clostridial agent of braxy?

A

C. speticum

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10
Q

What is braxy associated with?

A

Ingestion of frosted food

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11
Q

Whats is abomasitis associated with?

A

Creep fed lambs

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12
Q

What is the clostridial agent of blackleg?

A

C. chauvoei

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13
Q

What is blackleg associated with?

A

C. chauvoei is found in soil - so associated with dirty/bad hygiene following docking, castration, shearing

Causes gas production and stiffness

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14
Q

How do you control blackleg?

A

Maintain hygiene during husbandry procedures

Prophylactic penicillin

Vaccination

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15
Q

What is the clostridial agent of black disease?

A

C. novyi

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16
Q

What is black disease associated with?

A

Dark liver with distinct paler necrotic areas

Recent fluke migration

17
Q

What is the clostridial agent of tetanus?

A

C. tetani

18
Q

How do you treat tetanus?

A

Tetanus antitoxin

Antibiotics

Analgesia

19
Q

How do you prevent tetanus?

A

Hygiene at docking

Vaccination

20
Q

What is the clostridial agent of botulism?

A

C. botulinum

21
Q

Describe the vaccination course of clostridial diseases?

A
  • Initial course of two injections 4-6 weeks apart when sheep enter the breeding flock
  • Annual booster about 6 weeks before lambing
  • Lambs born to vaccinated dams should receive a first dose at about 8-12 weeks old, followed by a second booster at least 4 weeks later
22
Q

What is redgut?

A
  • Rapidly digestible diet leads to rapid transit of ingesta through the intestinal tract
  • Reduced rumen fill
  • Secondary fermentation in the lower gut and caecum leading to increased gas production
  • Intestines torse around the root of the mesentery
23
Q

How do you prevent redgut?

A

Gradually introduce sheep onto lush pastures

Provide good quality fiber

ICC: Farm Animal (54 decks)

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