Porcine Parvovirus

1
Porcine Parvovirus

• One of the most common causes of small litters of
  pigs (three times more pigs are lost during
  pregnancy than after birth)
• Costs the U.S. swine industry up to 75 million
  annually
• Infected sows usually dont appear ill, but if
  they are pregnant, the virus can be passed on to
  the fetal pigs across the placenta

2
Porcine Parvovirus

• If the infection occurs in the first month of
  pregnancy, the fetal pigs will die and be
  absorbed
• From day 30-70 of the pregnancy- fetal pigs die
  and are mummified
• After 70 days, the growing pigs may be able to
  fight off the infection

3
Porcine Parvovirus

• Very few swine herds in the U.S. are completely
  free of the virus
• Up to 50 of all gilts may be susceptible to the
  disease
• The only symptom that can be seen is that some
  sows will not have pigs or will not breed back.
• Abortions are rare because the endometrium is not
  affected, so there is no PGF2alpha released.

4
Porcine Parvovirus

• Infected pigs spread the virus by direct contact
  with other pigs. They also shed the virus into
  the environment
• The virus can survive well outside the animal
  although it is sensitive to Clorox.
• The only way to stop the virus is to properly
  disinfect facilities with Clorox. Vaccines are
  available for immunity that last throughout the
  life of the animal.