| Behaviour | Recording unit | Description | ||
|---|---|---|---|---|
| Arousal indicative behaviour | ||||
| Head banging | frequency | Vigorous vertical head movement | ||
| Head shaking | frequency | Rapid torsional neck movement, 1 - 10 direction changes, maximum interruption of 2 s between bouts | ||
| Pawing | frequency | Raising a front leg and scraping it backwards over the floor, 1 - 10 leg movements, switching legs possible, maximum interruption of 2 s between bouts | ||
| Snorting | frequency | Strong exhaling through the nostrils with audible sound | ||
| Tail swishing | frequency | Strong movement of the tail root, 1 - 5 changes of direction, maximum interruption of 2 s between bouts | ||
| Comfort behaviour | ||||
| Body shaking | frequency | Horizontal movement of the body, 1 - 10 changes of direction, maximum interruption of 2 s between bouts | ||
| Rolling | frequency | Lying down, rubbing the body with wavy or rolling movement on the ground and getting up | ||
| Scratching | frequency | Scratch itself with mouth, head, leg or to an object, 1 - 10 changes of direction of single movement, maximum interruption of 2 s between bouts | ||
| Elimination | ||||
| Defecating | frequency | Defecation | ||
| Urinating | frequency | Urination | ||
| Exploration | ||||
| Exploration of litter |
frequency, duration (s) |
Mouth max. 1/2 head length above ground | ||
| Locomotion | ||||
| Change of sector | frequency | Horse changes between the two sectors of light-box (half of the box near or away from illuminated rear wall), horse is located in the sector in which more than half of its body stands | ||
| Turning in circles | frequency | Turning around its body axis to minimum 180 and maximum 360 degrees | ||
| Oral activities (non-stereotypic) | ||||
| Chewing | frequency, duration (s) |
Masticatory movement with an empty mouth, maximum interruption of 2 s between bouts | ||
| Drinking | frequency | Mouth in drinker and swallowing movements, maximum interruption of 2 s between bouts | ||
| Licking salt lick | frequency | Licking the salt lick, maximum interruption of 2 s between bouts | ||
| Tongue activity | frequency | Licking of an object (other than salt lick) or the area around the mouth, maximum 2 s interruption | ||
| Yawning | frequency | Opening of the mouth by straight or lateral movement of the mandible | ||
| Resting behaviour | ||||
| Hind leg resting | duration (s) | One hind leg strained, the other bent, switching legs possible, maximum interruption of 2 s between bouts | ||
| Lying | frequency | Lying in a ventral or lateral position | ||
| Vocalisation | ||||
| Whinnying | frequency | Species-typical vocalisation | ||
| Position | ||||
| Distance to light | duration (s) | Horse in the half of the box near illuminated rear wall | ||
| Orientation to light |
duration (s) | Body axis towards or parallel to illuminated rear wall | ||