Table 2. Correlation between the birth interval of the piglets and the tail waggling behavior of sows

Parity Birth interval: tail wagging correlation p-value
P1 −0.441 0.087
P3 −0.428 0.097
P6 −0.832 0.001
Twenty sows used in this study were between the first and sixth parity in gilts (P1), parity 2–5 (P3), and parity 6–9 (P6).