Table 3.
Heritability (on diagonal), genetic correlation (above diagonal), and phenotypic correlation (below diagonal) estimates (SD) between sow reproductive performance and longevity traits using an animal modela
| PL2b | CL2 | CL3 | CL4 | CL5 | PNBA2 | PNBALF | CNBA2 | CNBA3 | CNBA4 | CNBA5 | CNBALF | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PL2 | 0.81 (0.03) | 0.38 (0.30) | 0.39 (0.29) | 0.38 (0.30) | 0.40 (0.29) | 0.98 (0.05) |
>0.99 (<0.01) | 0.18 (0.09) |
0.19 (0.08) |
0.18 (0.08) |
0.17 (0.08) |
0.17 (0.07) |
| CL2 | 0.00 (0.02) | 0.98 (0.02) | 0.96 (0.03) | 0.80 (0.11) | 0.63 (0.24) | 0.05 (0.03) |
0.02 (0.03) |
0.18 (0.35) |
0.96 (0.01) |
0.93 (0.01) |
0.89 (0.02) |
0.83 (0.03) |
| CL3 | 0.01 (0.03) | 0.93 (0.04) | 0.90 (0.29) | 0.93 (0.08) | 0.71 (0.28) | 0.05 (0.03) |
0.02 (0.03) |
0.78 (0.03) |
0.95 (0.01) |
0.96 (0.01) |
0.96 (0.01) |
0.92 (0.02) |
| CL4 | 0.01 (0.02) | 0.67 (0.14) | 0.81 (0.14) | 0.82 (0.38) | 0.84 (0.15) | 0.05 (0.03) |
0.02 (0.03) |
0.68 (0.05) |
0.90 (0.02) |
0.95 (0.01) |
0.97 (0.01) |
0.96 (0.01) |
| CL5 | 0.00 (0.03) | 0.46 (0.21) | 0.56 (0.25) | 0.67 (0.19) | 0.81 (0.39) | 0.05 (0.03) |
0.02 (0.03) |
0.61 (0.07) |
0.82 (0.03) |
0.89 (0.02) |
0.95 (0.01) |
0.96 (0.01) |
| PNBA2 | 0.87 (0.04) | 0.02 (0.02) | 0.03 (0.02) | 0.03 (0.02) | 0.03 (0.02) | 0.27 (0.02) |
0.94 (0.01) |
0.30 (0.10) |
0.31 (0.08) |
0.31 (0.07) |
0.29 (0.07) |
0.29 (0.07) |
| PNBALF | 0.98 (0.01) | 0.03 (0.03) | 0.04 (0.03) | 0.04 (0.02) | 0.04 (0.03) | 0.74 (<0.01) | 0.52 (0.02) |
0.23 (0.07) |
0.25 (0.06) |
0.27 (0.06) |
0.27 (0.06) |
0.28 (0.06) |
| CNBA2 | 0.11 (0.05) | 0.18 (0.32) | 0.42 (0.02) | 0.24 (0.03) | 0.14 (0.02) | 0.10 (0.03) |
0.11 (0.04) |
0.46 (0.03) |
0.94 (0.01) |
0.88 (0.02) |
0.81 (0.02) |
0.74 (0.03) |
| CNBA3 | 0.14 (0.06) | 0.85 (0.02) | 0.78 (0.01) | 0.53 (0.02) | 0.34 (0.02) | 0.14 (0.04) |
0.16 (0.04) |
0.86 (<0.01) | 0.78 (0.03) |
0.99 (<0.01) | 0.96 (0.01) |
0.92 (0.01) |
| CNBA4 | 0.15 (0.07) | 0.86 (0.02) | 0.79 (0.04) | 0.79 (0.04) | 0.55 (0.02) | 0.16 (0.04) |
0.19 (0.04) |
0.72 (<0.01) |
0.93 (<0.01) | 0.98 (0.01) |
0.99 (<0.01) | 0.97 (<0.01) |
| CNBA5 | 0.14 (0.07) | 0.83 (0.02) | 0.89 (0.01) | 0.88 (0.05) | 0.79 (0.02) | 0.15 (0.04) |
0.19 (0.04) |
0.62 (0.01) |
0.83 (<0.01) | 0.95 (<0.01) | 0.99 (<0.01) | 0.99 (<0.01) |
| CNBALF | 0.14 (0.06) | 0.73 (0.02) | 0.83 (0.02) | 0.86 (0.01) | 0.89 (0.01) | 0.15 (0.03) |
0.20 (0.04) |
0.49 (0.01) |
0.68 (<0.01) | 0.81 (<0.01) | 0.91 (<0.01) | 0.99 (<0.01) |
aPurebred sows were from a Landrace pure line, and the crossbred sows were F1 offspring from a cross between a Landrace pure line and a Large White pure line
bTrait abbreviations starting with P indicates purebred records and C indicates crossbred records. PL2, CL2, CL3, CL4, and CL5 are binary traits. For PL2, a success is considered to be a sow that remains in the nucleus herd long enough to farrow 2 litters. For CL2, CL3, CL4, and CL5, a success is considered to be a sow that remains in the commercial herd long enough to farrow 2, 3, 4, and 5 litters, respectively. PNBA2 and PNBALF represent the cumulative number born alive for purebred sows at parity 2 and for their lifetime. CNBA2, CNBA3, CNBA4, CNBA5, and CNBALF represent the cumulative number born alive for purebred sows at parity 2, parity 3, parity 4, parity 5, and for their lifetime. The estimates were calculated using THRGIBBS1F90 and the model described in the text