Epidemiological surveillance and economic impact analysis of different porcine reproductive and respiratory syndrome virus infection statuses in 23 breeding pig farms in Hubei, China

Table 6 Parameter distribution of economic loss model for an PRRSV outbreak in breeding pig farms

PN PRRSV provisional negative, PS PRRSV-positive stable, PU PRRSV-positive unstable, PRRSV Porcine reproductive and respiratory syndrome virus; Pearson 5 (shape parameter α, scale parameter β); Extreme value (location parameter α, shape parameter β); Loglogistic (location parameter γ, shape parameter α, scale parameter β); Trigen (bottom value, most likely value, top value, bottom percentiles, top percentiles) (a special triangular distribution)
^aTTS, the number of weeks required to produce PRRSV negative pigs at weaning
^bTTBP, the number of weeks needed to recover to the baseline production level that the herd had before PRRSV detection