3. Results
In pens with maize silage a higher percentage of pigs
manipulated rooting material than in pens with straw,
while a lower percentage of pigs manipulated pen
components and manipulated pen mates in pens with
maize silage than in pens with straw (Table 2).
In pens with a high space allowance a higher percentage
of pigs manipulated rooting material than in pens with a
low space allowance (Table 3).