Hopeful results for PCV vaccines
Canadian veterinarians report hopeful results about
two new vaccines, being tested in the country, devised to protect against
Porcine Circo Virus (PCV) associated diseases.
According to interviews with vets by Radio Farmscape Online, the number of
fatal cases, caused by PCV associated diseases, has fallen as a consequence of
the use of vaccines.
Dr Francois Cardinal
, from Les Consultants Avi-Porc, said on affected farms
he saw 'a large improvement with vaccination'. After a period of general natural
improvement, he said mortality already dropped from 10% to 8%. "But now, with
the vaccine we see a 2 or 2.5% mortality in finishers."
Not having seen any hard numbers yet, Prof Dr John Harding
from the Western
College of Veterinary Medicine at the Canadian University of Saskatchewan could
say he got 'very positive feelings'. "Circumstantial and evidence from the field
would certainly suggest that the vaccines are working at this point in time,
dropping the incidence down," Harding said.
The most widely recognised manifestation of PCV
infection is Post-weaning Multisystem Wasting Syndrome (PMWS
), affecting piglets through weight loss and
The two vaccines used are manufactured and distributed by Merial (used on
sows, prior to farrowing) and Intervet (used on piglets at the time of
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