Monoamine neurotransmitter profile in PFC and HC in pigs raised indoors (ID) or partially outdoors (OD) and submitted to low (LS) or high (HS) transport stress.

DA and 5-HT systems represent the sum of total metabolites in each pathway (DA, DOPAC and HVA; and 5-HT and 5-HIAA, respectively). Data are presented as means and SE. P values from univariate statistical analysis including Housing (H), Transport Stress (S) and their interaction Housing*Transport Stress (H*S) is shown. Statistical significant P values are in bold.