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Table 4 Mean percentage of sows from the IDAL and NEEDLE groups with a skin alteration at the injection site on day +1 (+28 h), +2 (+52 h), +7 and +28 post-vaccination

From: Effect of the needle-free “intra dermal application of liquids” vaccination on the welfare of pregnant sows

  Day + 1 Day + 2 Day + 7 Day + 28
IDAL 47% (9/19) 53% (10/19) 5% (1/19) 0% (0/19)
NEEDLE 9% (2/23) 22% (5/23) 22% (5/23) 26% (6/23)
P 0.0215 0.0428 0.3136 0.0351