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Publication type: Doctoral Thesis

Year: 2005

Author(s): Voglmayr, T

Title: Porzines Reproduktives und Respiratorisches Syndrom (PPRS)-Virus Eradikation in zwei oberösterreichischen Schweinezuchtbetrieben mittels Einsatzes einer Modified-Live-Virus Vakzine Porcilis(r) PRRS.

Source: Dissertation, Vet. Med. Univ. Wien, pp. 164.


Advisor(s):

Schmoll Friedrich


Abstract:
Porcine Reproductive and Respiratory Syndrome (PRRS) is one of the most economically important swine diseases worldwide. Different eradication programs of PRRSV were developed to establish and maintain a "high health herd status". Many of those programs were tested under field conditions to eradicate PRRS-virus. All well known PRRSV eradication concepts were successful in connection with high costs by production losses and additional general investments. The aim of this study was to establish an effective and successful PRRSV eradication program in two Upper Austrian swine breeding units based on well known practical experiences and without interruption of pig production and low economic losses. The following main objectives included: Effective use of MLV-Vaccine (Porcilis® PRRS); stabilization of breeding herd by herd closure for a period of 120 days; strict weaning of all piglets at day 21; planning and modification of pigflow; documentation and integration of extensive laboratory data during PRRSV eradiation program and finally excellent cooperation between swine producers, veterinarians and diagnostic laboratories involved. Summarizing the data obtained it can be stated that the production of PRRSV negative gilts coming from a PRRSV positive population in a period of 11 months and the integration of PRRSV negative breeding sows into a positive herd without initiation of new PRRSV outbreak (coexistence of PRRSV positive and negative animals) could be attained successfully at least for a period of 7 months.

Keywords:
PRRSV eradication / MLV-Vaccine / Porcilis® PRRS / laboratory diagnostic data / Upper Austrian pig breeding herds


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