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Post-weaning Multisystemic Wasting Syndrome of
Swine Treatment and Control
Personal observations: John Carr BVSc PhD DPM DiplECPHM MRCVS
The major stumbling block for producers will be
the term PMWS. For the last 10 years,
most North American producers will have had PMWS diagnosed on their farms. This condition is however, nothing like the
condition called PMWS in
The clinical signs in an individual pig and
even in a group of pigs can be very similar between traditional PMWS and the
more aggressive “epidemic” form of European PMWS. In the European form of PMWS, the condition can
be devastating to the stock and occurs in batch after batch and is generally
none responsive to medication or small management improvements. This condition is contagious, whereas the
traditional form does not exhibit contagious characteristics.
There are numerous problems with diagnosis
given the mistake that PMWS can exist in an individual pig on a farm with no
history of PMWS. This is associated with
a confusion over the role of PCV2 and PMWS in producing histological signs.
The paper is divided into several sections:
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