1. Introduction
In themajorityofpublicationsconcerningspaceallow-
ance ofpigsconsiderarangefrom0.6to1.0m² per pigup
to 110kgslaughterweight.Spaceallowancehasbeen
expressedas k in theformula lying area/pig¼kBW0.667
havingavalueofbetween0.03and0.05accordingto
PetherickandPhillips(2009), laterconfirmedby Averós
et al.(2010) and Spoolder etal.(2011). Sinceanimal
welfarewasthemainfocusinthisexperiment,the