Table 1.

Ethogram of sow postural activity and standing activity.

Posture
Sternal lying	Lying ventrally with udder unexposed
Lateral lying	Lying laterally with udder unexposed
Lateral lying with udder exposed	Lying laterally with udder visible
Sitting	Standing on its hindquarters with the front legs not bent
Kneeling	The knees of the front legs touch the ground and the back legs are straight
Standing	The sow rests on its four right legs
Standing activity
Eat	The sow has her head in the feeder
Drink	The sow has her head in the drinking trough
Something other	The sow is standing without eating or drinking, and is in motion or not and pawing, rooting or not