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Description
Signalment
The disease usually affects weanlings 6-10 weeks old but can affect pigs of any age, particularly naive pigs introduced into a herd or through exposure to a strain to which there is little immunity.
The disease is endemic in most herds and has been associated with PRRS, Circovirus and Swine Influenza.
Diagnosis
Clinical signs
- Pyrexia
- Dyspneoa with abdominal effort
- Cough
- Swollen joints and arthritis
- CNS signs, Trembling and paddling
- Sudden death
Pathology
Treatment
Prognosis
References
- Caused by Haemophilus parasuis
- May cause suppurative bronchopneumonia and pleuritis (as part of polyserositis)
- Stress of mixing, weaning and adverse environmental conditions are predisposing to the disease
- Glasser's disease
- Septicaemia
- Acute inflammation affecting pleua, peritoneum, mediastinum, pericardium, joints and meninges
- Causes a polyserositis - pericarditis, peritonitis, pleurisy and meningitis - in pigs 3-10 weeks old
- Also causes suppurative bronchopneumonia, pleuritis, polyarthritis (also H. suis)
- Expressed lesions vary between animals - meningitis is most consistent, arthritis in 20% of cases
- Fever, general malaise, repsiratory and abdominal signs, lameness, paralysis or convulsions
- Sporadic outbreaks in the UK
- Morbidity and mortality often low due to widespread acquired resistance
- Mortality up to 50% in some outbreaks e.g. specific pathogen-free herds
- Can be fatal in 2-5 days
- Chronic arthritis, meningitis and intestinal obstruction due to adhesions in some surviving pigs
- Due to transport, environmental stresses, dietary and managemental factors
- Fibrinous pneumonia secondary to enzootic pneumonia or virus infection e.g. swine influenza
Also known as: | b |