5. Conclusions
Pigs with access tomaize silagemanipulated this rooting
material more and pen components and pen mates less than
pigs with access to chopped straw suggesting that maize
silage may provide a better outlet for pigs’ explorative
behaviour than straw. Pigs with a high space allowance
(obtained by reducing the group size) manipulated the
rooting material more. Finally, increased manipulation of
pen mates and pen components (abnormal behaviour)
during the hour before daily allocation of new rooting
material suggests that theamount allocatedwas insufficient
to maintain explorative behaviour directed towards rooting
material, and to minimize redirection towards pen components
and pen mates, throughout the 24 h.