How do herd closure and rollover contribute to eliminating PRRS?
Researchers from China demonstrated the application of herd closure and the rollover approach without deliberate live virus exposure in a farrow-to-finishing herd after a severe PRRS outbreak. Herd closure and rollover is a popular PRRSV elimination strategy with acceptable costs. The herd closure and rollover strategy consists of 3 steps: PRRS-negative gilts are introduced in 1 batch. The number of PRRSV-negative gilts should be enough for the sow replacement during herd closure to minimis
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Vincent
ter Beek
Kees van
Dooren
Treena
Hein
