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ICC: Farm Animal > FASH9-10: Neurological Disease of Cattle and Sheep > Flashcards

FASH9-10: Neurological Disease of Cattle and Sheep Flashcards

1
Q

What should you exam from a distance to assess neurological issues?

A
  • Demeanour
  • Posture
  • Awareness
  • Symmetry
  • Gait
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2
Q

What should you assess on the head in a neruo exam?

A

Assess mentation

Head carriage

Facial symmetry

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3
Q

What should you assess on the neck in a neuro exam?

A

Range of movement

Pain

Extended examination along the spine

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4
Q

What reflexes should you assess in a neuro exam?

A

Proprioceptive reflexes

Patellar

Extensor carpi radialis

Withdrawal

Cutaneous trunci

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5
Q

What is another name for CCN?

A

Cerebral Cortical Necrosis

Polioencephalmoalacia

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6
Q

What are common characteristics of a lamb with CCN?

A

Star grazing

Blindness

recent diet change

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7
Q

What is the cause of CCN?

A

Damage to the brain secondary to altered glucose metabolism

  • Thiamine is essential to glucose metabolism
  • Thiamine is produced by rumen microflora
  • Over-growth of thiaminase producing bacteria precipitates the condition
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8
Q

How do you treat CCN?

A

VitB1 IV then IM

Dexamethasone IV

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9
Q

How do you diagnose a brain abscess?

A

CSF fluid may show increases in protein and WBCs

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10
Q

How does listeria reach the brainstem?

A

Bacteria reaches the brainstem along the Trigeminal nerve through abrasions in the mouth

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11
Q

How do you treat listeria?

A

Penicillin - high dose to achieve adequate concentrations in the brain

Remove poor quality silage

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12
Q

How do you prevent listeria?

A

Avoid mouldy silage

Remove stale feed from feeders

Feed hay to gimmers

Treating silage to increase pH

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13
Q

What is the agent that causes listeria?

A

L. monocytogenes

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14
Q

How do you treat vestibular lesions?

A

Penicillin

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15
Q

What is another name for TSE?

A

Transmissible Spongiform Encephalopathy

Scrapie

Sheep BSE

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16
Q

How do you control against Scrapie?

A

Genetic testing

17
Q

When the Cervical spine is damaged, what is affected? Brachial Region? T2-L3? L4-S2? Sacral Spine?

A

Cervical sping - C1-C6 - all four limbs affected

Brachial region - C6-T2 -More severe in forelimbs

T2-L3 - hindlimbs

L4-S2 - flaccid paralysis of hindlimbs

Sacral Spine - S1-S3 - bladder distention and loss of anal tone

18
Q

What is sarcocystis?

A

Sporozoan parasite

Following ingestion from contaminated pasture or feed, cysts develop in muscle or nerve cells

19
Q

How do you control Sarcocystis?

A

Prevent dog access to sheep carcasses and prevent fouling of pastures/bedding/feed

ICC: Farm Animal (54 decks)

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