Fig. 1

Prevalence of claw asymmetries at the three observation time points. Prevalence of asymmetries at each claw (a = left anterior, b = right anterior, c = left hind, d = right hind) at the three different time points (TP) (1 = 3rd day of life, 2 = 4th week of age, 3 = at slaughter) based on the total number of pigs initially included in this study. Claw numbers at the different TP were: TP1: n = 515; TP2: n = 482; TP3: a, b n = 307; c n = 118; d n = 189). The A-Scores were given according to a system with a Score 0 representing no asymmetry, Score 1 showing claws with slight asymmetries, Score 2 with intermediate asymmetry, and Score 3 with strong asymmetry as well as the indication “not available” classifying animals that died or were sold as well as the one hind claw, which was not photographed at the slaughterhouse due to technical limitations. The above n-numbers are the available claw numbers minus the claws of the animals that were not available