Table 1.

Behaviour ethogram for direct observations (scan sampling) at + 6 h and 24 h post-mixing (adapted from the WQ® protocol for growing pigs and Mc Guy et al., 2009 [8])

Active behaviour
Social negative behaviour	Aggressive behaviour, including biting or any social behaviour with a response from the disturbed animal
Social positive behaviour	Sniffing, nosing, licking and moving gently away from the animal without an aggressive or flight reaction from this individual
Feeding	Head in one of the two feeders
Drinking	Mouth on water dispenser
Exploring	Sniffing, nosing, licking all features of the pen or paddock and manipulation of enrichment material
Other active behaviours	All other active behaviours (air sniffing, gazing, walking etc.)
Non-Active behaviour
Resting	Sleeping (lying down with the eyes shut)