Table 1.
Least squares means of slaughter traits of Bresse-Gauloise (PURE) and Bresse-Gauloise × New Hampshire (CROSS) slaughtered at 12 to 19 wk of age and classified according to their slaughter age (12 to 15 wk; 16 to 17 wk; 18 to 19 wk).
| Genotype | PSE1 | P-value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PURE | CROSS | |||||||||
| Slaughter age | 12 to 15 | 16 to 17 | 18 to 19 | 12 to 15 | 16 to 17 | 18 to 19 | Genotype | Slaughter age | G × S | |
| wk | wk | wk | wk | wk | wk | (G) | class (S) | |||
| n | 24 | 11 | 17 | 20 | 40 | 72 | ||||
| Live weight at slaughter (g) | 2330 | 2673 | 3139 | 2441 | 2641 | 3281 | 88.5 | – | – | – |
| Slaughter weight (g)2 | 1562 | 1806 | 2135 | 1586 | 1801 | 2247 | 67.1 | – | – | – |
| Dressing (%) | 67.06 | 66.68 | 68.05 | 65.38 | 68.11 | 68.53 | 0.864 | 0.87 | 0.01 | 0.05 |
| Abdominal fat (%) | 1.87 | 2.07 | 2.30 | 1.93 | 2.54 | 1.99 | 0.181 | 0.51 | 0.02 | 0.01 |
| Heart (%) | 0.75 | 0.74 | 0.67 | 0.80 | 0.77 | 0.78 | 0.039 | 0.02 | 0.31 | 0.30 |
| Liver (%) | 2.28 | 2.47 | 2.35 | 3.04 | 2.96 | 2.43 | 0.183 | 0.01 | 0.04 | 0.07 |
| Gizzard (%) | 2.36 | 3.04 | 2.88 | 3.73 | 3.61 | 3.14 | 0.327 | 0.01 | 0.35 | 0.11 |
1Pooled standard error.
2Eviscerated and plucked carcass without head and feet.