Housing
In this study, an 800-m3
climatic roomequipped with
12 individual metal-slatted pens (0.85 × 1.50 m) was
used. Each pen was equipped with a feed dispenser and
a nipple drinker designed to avoid water spillage. In
the climatic room, ambient temperature and RH were
controlled within ±0.2°C and ±3%, respectively. The
photoperiod was fixed to 12 h and 30 min of artificial
light (0600 to 1830 h) daily, and the ventilation rate
was set at 50m3
h−1
pig−1
. Air speed was not controlled,
but periodic punctual measurements indicated that it
did not exceed 0.15 m/s