Sheep diseases

Question 1

Scald is caused by

Answer 1

Dichelobacter nodosus

Question 2

Footrot is caused by

Answer 2

Dichelobacter nodosus ± possible Fusobacterium necrosporum involvement

Question 3

CODD is caused by

Answer 3

Spirocytes (Treponema)
Dichelobacter nodosus
Fusobacterium necrosporum involvement

Question 4

White line diseased is caused by

Answer 4

Bacteria tracking up the white line which may have been weakened by laminitis

Question 5

Foot abscessed involve

Answer 5

Infection of the DIPJ

F. necrosporum & T. progenies commonly cultured

Question 6

Laminitis in Sheep is caused by

Answer 6

Endotoxemia - RFM, metritis, mastitis

Sudden increase in carbohydrate intake

Question 7

Caseous lymphadenitis is caused by

Answer 7

Corneybacterium pseudotuberculosis

Question 8

Jaagsiekte Retrovirus casus

Answer 8

ovine pulmonary adenocarcinoma through transformation of type II pneumocytes

Question 9

Johne’s disease is caused by

Answer 9

Mycobacterium avian paratuberculosis

Question 10

Difference in dz caused by Maedi Visna and Caprine Arthritis and Encephalitis Virus

Answer 10

MV - sheep

1. lungs - enduring progressive pneumonia, loss of compliance.
2. udder - progressive mastitis
3. CNS - progressive paralysis

CAE - goats
1. CNS - similar to MV but seen in much younger animals (kids 1-6mo)
2. joints - mononuclear cellular infiltrate, synovial necrosis, angiogenesis. Usually carpi.
chronic arthritis, often profound joint enlargement.