Table 2 Description of independent categorical variables and their percentage of occurrence in the company
Variable | Percentage of batches in each category |
|---|---|
Semester of placementb,e | Summer / autumn (48.76 %); winter / spring (51.24 %) |
Number of animals placedb,f | < 500 (20.78 %); 500–1000 (55.04 %); > 1000 (24.18 %) |
Number of barnsb,f | One (42.14 %); two or more (57.86 %) |
Stall ageb,f | < 5 years (20.78 %); 5 to 10 years (53.26 %); > 10 years (25.96 %) |
Reform of facilitiesb,f | Yes (21.07 %); no (78.93 %) |
Number of pigs per pen b,c,f | < 20 (21.81 %); > 20 (78.19 %) |
Building material/ barna,f | Masonry (97.48 %); wood and mixed (2.52 %) |
Type of feederb,c,f | Conical semiautomatic (81.75 %); others (18.25 %)d |
Type of drinkera,f | Nipple (98.66 %); water cup (1.34 %) |
Water sourceb,f | Well / headwater (55.19 %); treated water (44.81 %) |
Water pipes materiala,f | Hose (1.48 %); PVC pipe (97.18 %); mixed (1.34 %) |
Roof materialb,f | Clay (87.39 %); asbestos / zinc (12.61 %) |
Material used to separate the pensb,f | Wood or masonry (18.69 %); mixed (81.31 %) |
Floor materiala,f | Concrete (100 %) |
Pens with shallow poolsa,f | Yes (99.85 %); no (0.15 %) |
Slurry tanka,f | Yes (100 %) |
Electricity supplya,f | Yes (100 %) |
Waste lagoonsa,f | Yes (100 %) |
Ventilation fansa,f | Yes (2.52 %); no (97.48 %) |
Exhaust fansa,f | No (100 %) |
Humidifiers / nebulizersb,g | Yes (25.71 %); no (74.29 %) |
Compostersa,f | Yes (98.37 %); no (1.63 %) |
Trees around the facilitiesb,f | Yes (43.62 %); no (56.38 %) |
Barn’s position relative to the sunb,f | Diagonal / contrary (44.07 %); parallel (55.93 %) |
Number of feed useda,f | Five (100 %) |
Different feeds according to the sexa,f | No (100 %) |
Feed forma,f | Pelleted (100 %) |
Shock with antibioticsa,f | Yes (100 %) |
Routes used to administer antibioticsa,f | Water (1.19 %); water and feed (98.81 %) |
Programs useda,f | Ractopamine / immunocastration (100 %) |
Labour forceb,f | Unfamiliar (24.48 %); familiar (75.52 %) |
Number of employed genetica,f | Three (100 %) |
Breeds useda,e | Large White / Landrace / Pietrain (100 %) |
Sexed batchesa,f | No (100 %) |
Sex segregation in pensa,f | Yes (100 %) |
Ileitis, enzootic pneumonia, meningitisa,e | Yes (100 %) |
Glasser’s disease, erysipelaa,e | No (100 %) |
Originb,c,e,i | SPU (42.9 %); farrow-to-finish units (57.1 %) |
Sexb,c,h | Barrows (11.85 %); females (12.92 %); mixed (75.23 %) |