Skip to main content

Table 3 Estimates (standard error: SE) and P-values of pre-weaning mortality (PWM) and sow herd size in the mixed-effects model for the number of piglets weaned and piglets weaned per sow per year (PSY) in 91 herds

From: A 10-year trend in piglet pre-weaning mortality in breeding herds associated with sow herd size and number of piglets born alive

Effects Piglets weaned PSY
Estimate (SE) P-value Estimate (SE) P-value
Intercept (SE)a 10.1090 (0.1215) <  0.01 22.5403 (0.4211) <  0.01
PWM − 0.0610 (0.0128) <  0.01 − 0.1483 (0.0605) <  0.01
PWM x PWM −0.0011 (0.0009) 0.21 0.0093 (0.0046) 0.04
Sow herd size group −0.1988 (0.1630) 0.23 −0.2279 (0.5288) 0.66
Sow herd size group x PWM 0.0175 (0.0120) 0.14 0.1197 (0.0582) 0.04
Year 0.0590 (0.0233) 0.01 0.3164 (0.1033) <  0.01
Year x Year 0.0076 (0.0015) <  0.01 0.0143 (0.0080) 0.06
Year x PWM 0.0010 (0.0017) 0.59 −0.0056 (0.0082) 0.49
Year x Sow herd size group 0.0017 (0.0225) 0.94 −0.1365 (0.0732) 0.06
  1. aSEs were obtained from the statistical model