When fed ad libitum with concentrates throughout
the growing period outdoor rearing compared with
indoor rearing did not affect growth rate significantly,
but feed consumption was increased and lean
percentage was increased. When outdoor pigs were
fed restrictively with concentrates, daily gain was
reduced, lean percentage was increased, and back-fat
depth was reduced compared with ad libitum fed
pigs and feed conversion was not significantly
different from indoors ad libitum fed pigs. A
moderate feed restriction (for 6 weeks) until 40 kg
live weight resulted in a 152% compensatory growth