Actinobacillus
suis
Other names |
This has historically been classed as a secondary agent or
even normal inhabitant of the mouth and throat, but as herd health has
improved it is possible that specific disease/characteristics may be
associated with Actinobacillus suis |
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Causal agent |
Actinobacillus
suis a
bacteria. Distinctive from Actinobacillus pleuropneumoniae – does not require NAD |
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Age group |
Sows with mastitis.
Piglets with sudden death.
Growing pigs with respiratory problems |
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Clinical signs |
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Adult sows |
A. Suis has been associated with chronic mastitis and a few other
abscessations |
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Nursery pigs |
Septicaemia and sudden death |
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Recent
problems |
Pig found dead.
High fever, lethargy and anorexia.
Some skin discoloration. |
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Infectivity |
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Carried in the tonsils and nostrils of healthy pigs of any age |
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It has also been found in the vagina |
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Stress factors |
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It is likely that all of the stress factors involved in
the post weaning respiratory complex is also going to be involved in the
demonstration of clinical signs |
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Post-mortem Lesions |
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Acute necrohaemorrhagic lesions scattered throughout the lung. There may be pleurisy, pericarditis, peritonitis and septicaemia. The lesions look very much like acute pleuropneumoniae. The mastitis lesions can be very extensive. |
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Diagnosis |
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Culture of the
organism |
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Histopathology
of the lesion |
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Treatment |
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Individual
|
Because of the
rapid onset of the disease in grow finish animals treatment can be difficult |
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With sows with
chronic mastitis cull from herd |
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Common differentials |
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Actinobacillus
pleuropneumonia. Other causes of mastitis |
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Zoonotic implications |
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There are no zoonotic implications |
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