Table 3.
Geometrical properties of humerus of 16 wk pullets housed in AV system and CCs.1
| Housing | |||
|---|---|---|---|
| Dependent variable | AV | CC | P value |
| Geometrical properties | |||
| Area (mm2) | 12.92 ± 0.122 | 9.42 ± 0.13 | <.0001 |
| Medial thickness (mm) | 0.74 ± 0.01 | 0.54 ± 0.01 | <.0001 |
| Lateral thickness (mm) | 0.75 ± 0.01 | 0.55 ± 0.01 | <.0001 |
| Anterior thickness (mm) | 0.68 ± 0.01 | 0.52 ± 0.01 | <.0001 |
| Posterior thickness (mm) | 0.70 ± 0.01 | 0.52 ± 0.01 | <.0001 |
| Average medio-lateral thickness (mm) | 0.74 ± 0.01 | 0.55 ± 0.01 | <.0001 |
| Average antero-posterior thickness (mm) | 0.69 ± 0.01 | 0.52 ± 0.01 | <.0001 |
| Average thickness (mm) | 0.72 ± 0.01 | 0.53 ± 0.01 | <.0001 |
| Proximal medio-lateral diameter (mm) | 7.52 ± 0.03 | 7.17 ± 0.03 | <.0001 |
| Mid medio-lateral diameter (mm) | 6.82 ± 0.03 | 6.39 ± 0.03 | <.0001 |
| Distal medio-lateral diameter (mm) | 6.88 ± 0.03 | 6.46 ± 0.04 | <.0001 |
| Prox antero-posterior diameter (mm) | 5.98 ± 0.02 | 5.74 ± 0.02 | <.0001 |
| Mid antero-posterior diameter (mm) | 5.79 ± 0.02 | 5.59 ± 0.02 | <.0001 |
| Distal antero-posterior diameter (mm) | 5.92 ± 0.02 | 5.73 ± 0.02 | <.0001 |
| Average medio-lateral diameter (mm) | 7.07 ± 0.03 | 6.68 ± 0.03 | <.0001 |
| Average antero-posterior diameter (mm) | 5.90 ± 0.02 | 5.69 ± 0.02 | <.0001 |
| Average diameter (mm) | 6.49 ± 0.02 | 6.18 ± 0.02 | <.0001 |
1
AV = aviary system; CC = conventional cages.
2
Values are presented as least-squares mean ± standard error of the mean.