Table 1
Developed measures for welfare assessment of growing pigs on farms

Welfare criteria	Measures
I. Good feeding
1 Absence of prolonged hunger1	Body condition scores
2 Feed quality2	Feed condition4
3 Absence of prolonged thirst1	Water supply4
II. Good housing
4 Environmental condition2	Temperature and relative humidity5
5 Ventilation status (air quality)2, 3	Particulate matter and ammonia concentration5
6 Comfort around resting1	Bursitis and manure on the body
7 Thermal comfort1	Shivering, panting, and huddling
8 Ease of movement1	Space allowance
9 Other facility condition3	Conditions of floor, fencing, feeder, and other facilities inside the farm4
III. Good health
10 Absence of injuries1	Lameness, wounds, tail biting
11 Absence of disease1	Coughing, sneezing, pumping, twisted snouts, rectal prolapse, scouring, skin condition, ruptures, and hernia
12 Health management3	Veterinary-client-patient relationship, medical record, and hospital pen4
13 Euthanasia2	Number of euthanized animal and euthanasia methods
IV. Appropriate behavior
14 Expression of social behavior1	Negative and positive social behavior
15 Expression of other behavior1	Exploratory behavior
16 Good human animal relationship1	Fear of humans
17 Positive emotional state1	Qualitative behavior assessment