Ascariasis (Ascaris suum)
Introduction
Ascariasis is a common parasitic disease of pigs caused by Ascaris suum. It mainly affects young pigs and is associated with liver and lung lesions as well as reduced growth performance.
Etiology
Pathogenesis
- Larval migration through liver causes “milk spots”
- Lung migration leads to coughing and pneumonia
Clinical Signs
- Poor growth
- Coughing
- Unthriftiness
Diagnosis
- Fecal flotation (eggs)
- Postmortem liver lesions
Treatment
- Ivermectin
- Benzimidazoles
Control
- Hygiene and sanitation
- All-in/all-out pig systems
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