Figure 2.

Percentage of pigs lying on the slatted floor from day-5 to day0 relative to an event of fouling in pens with no straw provided (A) and in pens provided daily with 150 g of straw per pig on the solid floor (B) divided between control and fouling pens. P < 0.1, *P < 0.05, **P < 0.01 and ***P < 0.001 indicate differences between control and fouling pens. Difference in lower case letters (a, b, c) indicates differences between observation days within each pen type (control and fouling).