ThePigSite.com
5M Retail Now Open - Win a Ipad 2Sign up for ThePigSite weekly newsletterFollow us on Twitter
PMWS & PCVD
Home PMWS News PMWS Research PMWS Forum PMWS Newsletter
PCVD.org Dansk
PCVD.org Français
PCVD.org Svenska
PCVD.org Nederlands
PCVD.org Español
PCVD.org English


This free resource is kindly supported by: If you have a information you would like is to include in this section please contact us

Vaccination
Management
Disease Information
A PMWS update (Jake Waddilove)
ABOUT PMWS & PDNS
National Pork Board PMWS Fact Sheet
About PDNS (Jake Waddilive)
CEI Emerging Disease Notices: PMWS / PDNS
Conference and meetings archive
Case Histories
Yorkshire Farm, UK - Mike Muirhead - Final Update, June 2002
Mike Muirhead's case history of a Yorkshire farm with PMWS and PDNS.
East Anglia Farm, UK - Philip Richardson
This paper charts the course and effects of the disease on a single herd as well as highlighting the economic impact.
Photographs
Clinical signs
Photos of the clinical signs that are seen generally in pigs with PMWS and PDNS. Includes skin lesions, enlarged lymph glands, wasting and dead pigs.
Post mortem (1)
Photos of the signs that are seen in post-mortem samples of pigs with PMWS and PDNS. Includes interstitial pneumonia, secondary bacterial infection, enlarged lymph nodes, oedema and intra cytoplasmic inclusions
Post mortem (2)
More Photos of the signs that are seen in post-mortem samples of pigs with PMWS and PDNS.


PMWS Research Archives

Published Wednesday, January 07, 2009: Veterinary Microbiology
Torque Teno virus (TTV) infection in sows and suckling piglets
M. Sibila, L. Martínez-Guinó, E. Huerta, M. Mora, L. Grau-Roma, T. Kekarainen and J. Segalés
Torque Teno virus (TTV) is a single stranded DNA virus that has been detected in serum of primate and non-primate species including swine. Little information on swine TTV infection and transmission dynamics is nowadays available. The goal of this study was to gain insight into the potential role of the sow in transmitting TTV to piglets and the infection dynamics of both swine TTV genogroups (TTV1 and TTV2) during the lactation period. Serum samples from 44 sows at 1 week post-farrowing and 215 piglets at 1 and 3 weeks of age were tested using TTV1 and TTV2 PCR methods. Sow parity distribution and the number of delivered piglets (liveborn, stillborn and mummified) per each studied sow were recorded. TTV1 was detected in higher percentages than TTV2 in both sows (75% vs. 43%, respectively) and piglets at 1 (17% vs. 7%, respectively) and 3 (32% vs. 12%, respectively) weeks of age. TTV1 and TTV2 co-infections were observed in higher percentages in sows (34%) than in piglets (2% and 4% at 1 and 3 weeks of age, respectively). Detection of swine TTV genogroups in sows was not associated with their detection in piglets. Moreover, there were piglets infected at 1 week of age with a swine TTV genogroup different from the one detected in their dam. The number of sows delivering stillborns and the mean number of stillborns per sow tended to be higher in the TTV2 infected sows; this value was significantly higher when co-infected sows (TTV1 and TTV2) were compared with non-co-infected ones. Old parity sows had a higher percentage of TTV1 infected 1 week-old piglets. Results of the present study showed that the TTV infection occurs early in the production system and that these viruses may be transmitted from sow-to-piglet but also from piglet-to-piglet in farrowing facilities.

To continue reading this article please click here

Have you published information? To add please email the details

pcvd Merial BPEX PMWS, PCVD Technical Zone home page
 
Our Sponsors
Partners