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Table 4 Weekly estimated KPI geometric means and 95 % confidence interval (95 % CI) for Positive unstable and Positive stable

From: Effect of PRRSV stability on productive parameters in breeding herds of a swine large integrated group in Spain

KPI Positive unstable
(Mean (95 % CI))
Positive stable
(Mean (95 % CI))
Mean Difference
(PS-PU)
p-value
ABTHS 0.78 (0.59–1.02) (n = 741) 0.84 (0.65–1.09) (n = 1256) + 0.07 0.297
BAR (%) 90.53 (89.00–92.06) (n = 738) 91.61 (90.10–93.12) (n = 1253) + 1.08 < 0.0001
PWMR (%) 12.15(11.05–13.36) (n = 609) 11.20 (10.22–12.28) (n = 1039) -0.95 0.002
WPTHS 507.74 (465.43–550.04) (n = 732) 532.95 (491.03–574,88) (n = 1253) + 25.22 < 0.0001
  1. According to the model used, the genetic was studied as a fix effect and we estimated that genetic D had a significant increase on WPTHS (+ 84.24 weaned piglets/1,000 sows/week, p < 0.001) and genetic B significant reduction on WPTHS (-92.05 weaned piglets/1,000 sows/week, p < 0.03)