Blood 5-HT measures at 8 (T1), 9 (T2) and 22 (T3) weeks of life and given per type of pig (with respect to tail biting) in barren housing over three phases of life (weaner, grower, finisher) post-weaninga.

aUntransformed LSmeans ± SEM. LSmeans lacking a common letter differ by PbWhole blood 5-HT level in nmol/ml; Platelet 5-HT level in nmol/platelet 109; Platelet 5-HT uptake velocity in pmol/platelet 109/min.cB = Main effect of tail biter; V = Main effect of victim; B×V = Interaction between main effects resulting in Biter, Victim, Biter/Victim and Neutral.+P*P**PBlood 5-HT measures at 8 (T1), 9 (T2) and 22 (T3) weeks of life and given per type of pig (with respect to tail biting) in barren housing over three phases of life (weaner, grower, finisher) post-weaninga.