Fig. 1From: Implementation of piglet castration under inhalation anaesthesia on farrowing farmsPercentage of animals with sufficient anaesthesia separated by farms (1–15, farm 10 excluded) (mean ± SD) and sorted by device (PA, PN, AN). Significant differences between farms within device groups are signed with small letters a: p < 0.0035, OR = 3.1629; b = p < 0.0001, OR = 0.1424, c: p < 0.0001, OR = 0.1655, d: p = 0.0007, OR = 0.4018Back to article page