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. 2021 Aug 8;11(8):2338. doi: 10.3390/ani11082338

Table 4.

Behaviors observed in the study in the two buildings.

Behavior Measure UM NV MV Estimate p-Value
Mean SD Mean SD
T1 (40 kg)
Tail position up % 33.7 6.3 77.9 19.7 −1.0 <0.0001
Hanging down tail % 7.8 5.3 14.5 9.8 −5.0 0.1858
Tucked low tail % 8.5 6.3 3.0 4.6 0.8 0.1596
Stereotypies % 5.7 4.2 18.4 6.7 −12.7 <0.0001
Negative social behavior % 4.1 3.9 11.0 3.9 −1.1 0.0147
Positive social behavior % 2.1 3.0 1.2 1.9 0.8 0.5784
Pen exploration % 74.1 13.2 75.6 3.8 −1.0 0.6607
Enrichment exploration % 16.0 9.8 10.4 2.5 1.0 0.6607
Other active behavior % 3.7 7.9 1.7 2.1 0.6 0.2541
Inactive behavior % 64.3 14.7 48.0 9.6 16.9 0.0002
T2 (100 kg)
Tail position up % 87.3 9.1 84.7 7.7 1.0 0.4801
Hanging down tail % 8.0 6.1 10.7 5.6 −1.0 0.3360
Tucked low tail % 4.7 5.5 4.0 5.6 1.0 0.7913
Stereotypies % 24.4 11.6 34.0 9.7 −9.5 0.0458
Negative social behavior % 6.5 4.7 6.6 3.4 0.9 0.9438
Positive social behavior % 6.0 5.8 4.7 6.0 −1.0 0.6459
Pen exploration % 70.3 13.4 74.0 9.2 −3.7 0.4680
Enrichment exploration % 9.2 4.3 11.3 2.8 −2.1 0.1999
Other active behavior % 8.0 11.7 3.3 3.9 0.8 0.1983
Inactive behavior % 54.8 12.8 54.0 11.0 0.9 0.8719
T3 (160 kg)
Tail position up % 97.3 5.6 94.0 7.3 1.0 0.2565
Hanging down tail % 2.0 4.5 3.3 3.5 1.0 0.0111
Tucked low tail % 0.7 2.1 2.7 4.7 1.2 0.5370
Stereotypies % 19.3 12.2 16.3 10.3 3.0 0.5434
Negative social behavior % 1.5 2.1 6.8 6.0 0.5 0.0408
Positive social behavior % 2.7 2.3 4.8 7.0 1.2 0.3060
Pen exploration % 77.7 15.4 78.9 12.4 1.0 0.8505
Enrichment exploration % 5.4 4.4 7.1 9.0 1.0 0.5658
Other active behavior % 12.7 13.6 2.4 3.1 0.7 0.0337
Inactive behavior % 52.4 19.0 76.4 14.0 1.0 0.0043

UM = unit of measurement; NV = naturally ventilated building; MV = mechanical ventilated building.