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- W4243972852 abstract "Abstract Background: In July 2019, a PRRSV-negative boar station was infected with a new recombinant PRRSV‐1 virus strain, which subsequently spread to at least 36 herds that had received semen from the boar station. In the following months, all the infected herds reported reduced productivity. The aim of the present study was to evaluate the impact of the PRRS outbreak. Results: Production data were collected from 13 of the herds. The average levels of farrowings/week, liveborns/litter, stillborns/litter, pre-weaning mortality and weaned pigs/litter were compared for the five-month period after infection and the preceding seven months before infection with the new variant of PRRSV-1. Twelve herds experienced a decrease in farrowings/week (0.1-10.8 percent fewer farrowings/week), and all herds experienced fewer liveborns (0.8-4.8 fewer liveborns/litter) and more stillborns (0.6-2.6 more stillborns/litter). Pre-weaning mortality nearly doubled in half of the herds. Overall, the 13 herds were missing 2.4-6.5 pigs/litter at weaning during the five months after infection compared to the seven preceding months before infection. Conclusion: In this study, the impact of this new PRRSV-1 variant on productivity exceeded that typically seen in Danish herds infected with PRRSV-1." @default.
- W4243972852 created "2022-05-12" @default.
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- W4243972852 date "2020-06-11" @default.
- W4243972852 modified "2023-09-27" @default.
- W4243972852 title "Production Losses Five Months After Infection With A New Prrs-1 Variant In 13 Danish Sow Herds" @default.
- W4243972852 doi "https://doi.org/10.21203/rs.3.rs-33497/v1" @default.
- W4243972852 hasPublicationYear "2020" @default.
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