Table 1.

Ethogram of measures used for quantitative assessment of behaviour in the 1-min observations used for QBA.

	Open field	Elevated plus maze
Activity	Squares crossed (number): Number of squares (n = 16) the pig enters (midpoint of head between the ears) during 1 min observation.	Zones visited (number): Number of different zones (four different arms of the EPM plus center platform) the pig enters (midpoint of head between the ears) during 1 min observation.
Vocalisation	Low grunts (number): Low pitched vocalisation	Low grunts (number): Low pitched vocalisation
Exploration	Explore pen/objects (duration in seconds): Pig makes snout contact with ball, feeder or floor/wall of arena.	Root (duration in seconds): Pig makes contact with floor substrate and makes repetitive nosing movements with snout.