Pens were equipped with a feeder with three feeding places and a nipple drinker. The floor of the pens was fully slatted and each chamber had a separate manure pit and an individual air outlet.
Fresh air was supplied via a trickle ceiling that supplied air from the roof to the chambers. All chambers were connected
to a central corridor. The doors connecting the chambers to the corridor were equipped with sensors to assure doors were
tightly closed. Furthermore,