Veterinary Internal Medicine

1. PULMONARY ADENOMATOSIS/JAAGSIEKTE

2. INTRODUCTION
 A contagious viral, neoplastic lung disease of
sheep. Rare in goats.
 Reported in Europe, Asia, Africa and
Americas

3. AETIOLOGY
 Retrovirus has been isolated from the tumour
and respiratory discharges.
 Transmission - respiratory route
 The virus induces tumour growth in the lung
tissue

4. CLINICAL SIGNS
 Long incubation period. Affected sheep > 3-4yrs
 Many sheep infected but only few show clinical
disease
 Tumours interfere with respiration.
 Loose body condition and have severe respiratory
distress
 Moist rales. Coughing isn’t common.
 When head is lowered, frothy mucus runs from the
nostrils.
 Death occurs in days to weeks commonly due to
secondary Pasteurellosis.

5. KEY WORDS
 Age
 Moist rales
 abnormal volumes of respiratory fluids
 without fever

6. LESIONS
 Confined to lungs and associated
lymphnodes
 Vary from small nodules to extensive solid
areas especially on the ventral lobes.
 Copious white froth in air passages
DDX
 CAE
 Maedi
 Pasteurellosis

9. DIAGNOSIS
 No serological tests available
 Use clinical signs and epidemiology
 Postmortem examination
Control
 No treatment
 Culling sheep
 Avoid crowding

10.  The end.