Enzootic Pneumonia

Question 1

Signs

Answer 1

Mycoplasma hyopneumoniae
Affects pigs of all ages in susceptible or naive herds
Acute disease (naive animals)
- 6 to 8 week incubation period
- severe acute pneumonia (coughing, fever, high mortality)
Chronic disease
- 7 to 12 weeks of age (after maternal antibody wanes)
- non-productive cough
- lung lesions at slaughter (may be subclinical)

Question 2

Costs

Answer 2

• decreased growth rate/ increased days to slaughter
• – lung score
• cost of feed
• condemnation losses
• treatment
• non-saleable pigs

Question 3

Treatment & Control

Answer 3

correct management problems:

• overcrowding
• large group size >300 pigs per air space
• poor ventilation: temperature, insulation, chilling