Sickness behaviour (mean (% of scans) ± standard error) of BHI and EHI pigs.

<p>(A) Activity. (B) Lying behaviour. (C) Eating and drinking. PRRSV (ID0) and <i>A</i>. <i>pleuropneumoniae</i> (ID8) infections are indicated as black vertical lines. HxD: housing-day interaction effect. Day effects are indicated as ‘a’ and ‘b’, days with no common superscript differ significantly (C) (p<0.05). Post hoc comparison at ID9, ***: p<0.001 (A), **: p<0.01 (B).