Table 4.
Heritability (h²; ± standard error) and genetic correlation (rg; ± standard error) estimated for bone breaking strength (BBS) and bone mineral density (BMD) of tibiotarsus and humerus in four chicken layer lines.
| Layer Line | Tibiotarsus | Humerus | ||||
|---|---|---|---|---|---|---|
| h² BBS | h² BMD | rg | h² BBS | h² BMD | rg | |
| WLA | 0.58 ± 0.23 | 0.75 ± 0.23 | 0.93 ± 0.23 | 0.26 ± 0.22 | N.A. | N.A. |
| R11 | 0.29 ± 0.22 | N.A. | N.A. | 0.40 ± 0.20 | 0.73 ± 0.21 | 0.81 ± 0.18 |
| BLA | 0.17 ± 0.19 | 0.55 ± 0.20 | 0.16 ± 0.37 | 0.50 ± 0.26 | 0.25 ± 0.17 | 0.54 ± 0.30 |
| L68 | 0.46 ± 0.23 | 0.51 ± 0.23 | 0.74 ± 0.17 | 0.44 ± 0.21 | 0.46 ± 0.25 | 0.79 ± 0.18 |
N.A., not analysable.