Fig. 1

Relative tail length in percent (length from tail tip to tail base/length from ear base to tail tip*100) of 348 3-day old piglets by sex, boar, sow line and kinked tails. Median with boxes (percentiles 25 and 75) and whiskers (percentiles 5 and 95). The number of piglets is given in brackets in the x-axis legend, together with the superscript for the significance (within the same factor, characteristics with exclusively different letters are statistically significant (P < 0.05)