Figure 1.

The mean (±SEM) pen level hourly rates of lying (Lie) and standing (Stand) before and after injections (time of day of injections: 0 h) during the saline control days (Con) and the days of total vaccination of all pigs within the pens (total Vacc). Effect of treatment – lying: P < 0.002, standing: P < 0.001; time of day – lying: P < 0.001, standing: P < 0.001; and treatment × time of day – lying: P < 0.001; standing: P < 0.001. Differences of P < 0.05 in the least square mean rates of that specific behavior between the Con and total Vacc treatments at the same time points are marked with different superscripts.