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VMS4008 > Sheep Mobility & Claw Health > Flashcards

Sheep Mobility & Claw Health Flashcards

1
Q

Costs of lameness?

A
  • Economics
  • Indirect & direct costs: 24m£/yr
  • Welfare
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2
Q

What are the Main causes of Lameness in UK sheep flocks?

A
  1. Scald
  2. Foot rot
  3. CODD
  4. Toe granuloma
  5. Toe abscess
  6. Shelly hoof
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3
Q

What other causes of Lameness?

A
  • Post-dipping lameness
  • Strawberry foot rot (orf)
  • Injury - e.g. soil balling, foreign bodies
  • Arthritis – old age, joint ill (lambs)
  • Tick pyaemia
  • (Foot and Mouth Disease)
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4
Q

What aetiology og Ovine Digital Dermatitis (SCALD)

A

Dichelabactor nodosus

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5
Q

Describe Scald

A
  • Occurs in wet, warm lush grazing conditions
  • Softening of skin
  • Causes a dermatitis between the claws
  • Non-invasive
  • Infectious
  • Sporadic outbreaks
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6
Q

Tx for Sclad?

A
  • Lambs: topical oxytet spray for the individual, repeated daily for 3 days
  • Ewes: Systemic antibiotics
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7
Q

Prevention of Scald?

A
  • Moving feed troughs regularly
  • Foot bathing weekly
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8
Q

Footrot aetiology?

A

Fusobacterium necrophorum (ubiquitous)

Dichelobactor nodosus -> synergistically. FN lyses epidermal matrix causing separation of hoof horn. DN then invades with keratolytic proteases

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9
Q

When do we see Footrot?

A
  • spring, Autumn, Wet housing conditions
    survives on pasture for 14 days
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10
Q

Tx - ABs?

A
  • Scald – Topical oxytetracycline spray for 3 days
  • Foot rot – Systemic LA oxytetracycline or

amoxycillin

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11
Q

Control of footrot?

A

5 pt plan

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12
Q

CODD aetiology?

A

Treponemes spp but fusobact and dichelobact also possibly involved

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13
Q

Symptoms of CODD?

A
  • Red ulcerated areas at the coronary band
  • The wall horn often separates
  • Hair loss 2-3cm above the coronary band
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14
Q

T/F CODD hard to differentiate from footrot in advanced lesions?

A

true

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15
Q

Tx for CODD?

A

Amoxicillin LA or Macrolides, NSAIDs
Isolate

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16
Q

Describe White line disease

A
  • Sporadic occurence
  • Often in misshapen feet
  • May get bacterial entry and result in an abscess
  • May track up and discharge at the coronary band
17
Q

TX for white line dx?

A

Careful foot paring to remove underrun horn and release pus

18
Q

Why do we get toe granulomas?

A
  • Over trimming
  • Chronic irritation
  • Untreated lameness

noncontagious so high prevalence suggests an underlying cause

19
Q

CLS of toe grnauloma?

A

painful red swelling at point of toe

20
Q

Tx for Toe granuloma?

A
  • Removal an option
  • Culling most common
21
Q

Control of granulomas?

A
  • Trimming protocol and controlling other lameness causes
22
Q

What principles of managing lameness causes?

A
  1. Build resilience
  2. Establish challenge
  3. Reduce challenge

VMS4008 (42 decks)

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