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PRRS Eradication by Herd Closure
By Montserrat Torremorell and William T. Christianson, PIC, USA. - PRRS eradication strategies have recently received attention from the US swine industry. PRRS virus infection can be costly and difficult to control and is a major limitation, often preventing efficient production in intensive swine units.
A variety of strategies have been described for PRRS eradication. Total
depopulation/ repopulation, partial depopulation (Dee et al., 1993), isowean
(Gramer et al., 1999) or segregated early weaning (Rajic et al., 2001), test and
removal (Dee 1998), mass vaccination with unidirectional pig flow (Dee &
Philips, 1998) and herd closure are among the strategies that have been
promoted.
We will describe the procedure of PRRS eradication without depopulation
based on herd closure. This procedure has also been described as PRRS
elimination by roll over, flow-through or normal attrition.
To read the full paper Click Here (8 page pdf file, opens in new browser)
Source: Paper presented at the Banff Pork Seminar - January 2002
