Sheep Lameness

Question 1

Sheep lameness scores

Answer 1

0-3

Question 2

What is this lesion?

Answer 2

Scald/interdigital dermatitis

Question 3

Progression of scald

Answer 3

Footrot

Question 4

Most common cause of lameness in sheep

Answer 4

Footrot

Question 5

Highly invasive and painful lesion starting a coronary band

Answer 5

Contagious Ovine Digital Dermatitis (CODD)

Question 6

Bacteria causing footrot

Answer 6

Dichelobacter nodosus

Question 7

Clinical signs of footrot

Answer 7

Smell
Grey ooze
Under running of hoof horn near to skin between claws/anywhere

Question 8

What lameness causes >30% of lameness in the first year then settles to ~2%?

Answer 8

CODD

Question 9

Causative agent of CODD

Answer 9

Spirochaetes/treponemes, often mixed with Dichelobacter nodosus

Question 10

Treatment of CODD

Answer 10

Long acting injectable antibiotic (amoxicillin first, then macrolides)
Topical antibiotic (all 4 feet)

Question 11

What is this lesion caused by snipping into sensitive part of toe or chronic unresolved footrot?

Answer 11

Toe granuloma

Question 12

Treatment of toe granuloma

Answer 12

Cauterise granuloma site with a hot iron and pack with copper sulphate crystals
Don’t cut off without a tourniquet or it will bleed profusely
Use local anaesthetic

Question 13

What presentation of white line disease is this?

Answer 13

Shelly hoof

Question 14

What presentation of white line disease presents with sudden onset extreme lameness?

Answer 14

Toe abscess

Question 15

Deep sepsis of the distal interphalangeal joint

Answer 15

Foot abscess

Question 16

Causes of foot abscess

Answer 16

Trauma
Infection
Excessively strong foot-bathing

Question 17

Treatment of foot abscess

Answer 17

Amputate digit
(Antibiotic flushing if caught early)

Question 18

Lameness 5 point control plan

Answer 18

Avoid spread
Treat individuals
Quarantine
Cull
Vaccinate