Table 4.
Mean values (LS-means ± SEM) for live weight (LW), carcass weight (CW), and cut-up yields among MOD strains of broiler chickens at Target Weights 1 and 2.
| Variable | Strain |
|||
|---|---|---|---|---|
| E | H | O | S | |
| Target weight 11 | ||||
| Live wt (g) | 2,506 ± 56.8a | 2,321 ± 53.8ab | 2,365 ± 53.8ab | 2,208 ± 50.2b |
| Carcass wt (g) | 1,749 ± 42.5 | 1,641 ± 48.9 | 1,679 ± 41.0 | 1,580 ± 38.6 |
| Breast wt (g) | 451.3 ± 14.42 | 439.8 ± 17.21 | 463.1 ± 14.87 | 419.9 ± 13.49 |
| Thigh wt (g) | 284.0 ± 7.31 | 257.8 ± 8.12 | 272.3 ± 7.07 | 251.1 ± 6.52 |
| Drumstick wt (g) | 238.1 ± 4.69a | 224.2 ± 5.41ab | 224.2 ± 4.46ab | 213.1 ± 4.24b |
| Wing wt (g) | 194.6 ± 4.43a | 181.5 ± 5.06ab | 180.7 ± 4.13ab | 173.8 ± 3.98b |
| Carcass yield (% LW)2 | 69.8 ± 0.54 | 70.7 ± 0.67 | 71.0 ± 0.56 | 71.5 ± 0.56 |
| Breast yield (% CW)3 | 25.8 ± 0.35b | 26.8 ± 0.45ab | 27.6 ± 0.38a | 26.6 ± 0.37ab |
| Breast yield (% LW) | 18.0 ± 0.27b | 18.9 ± 0.36ab | 19.6 ± 0.31a | 19.0 ± 0.29ab |
| Thigh yield (% CW) | 16.2 ± 0.33 | 15.7 ± 0.39 | 16.2 ± 0.34 | 15.9 ± 0.33 |
| Thigh yield (% LW) | 11.3 ± 0.23 | 11.0 ± 0.27 | 11.5 ± 0.23 | 11.4 ± 0.23 |
| Drumstick yield (% CW) | 13.6 ± 0.17 | 13.7 ± 0.21 | 13.4 ± 0.17 | 13.5 ± 0.17 |
| Drumstick yield (% LW) | 9.5 ± 0.12 | 9.7 ± 0.15 | 9.5 ± 0.12 | 9.6 ± 0.12 |
| Wing yield (% CW) | 11.1 ± 0.16 | 11.1 ± 0.20 | 10.8 ± 0.16 | 11.0 ± 0.16 |
| Wing yield (% LW) | 7.8 ± 0.12 | 7.8 ± 0.14 | 7.6 ± 0.11 | 7.9 ± 0.12 |
| Target weight 24 | ||||
|---|---|---|---|---|
| Live wt (g) | 3,285 ± 74.5 | 3,135 ± 73.7 | 3,252 ± 73.7 | 3,059 ± 69.3 |
| Carcass wt (g) | 2,387 ± 58.0 | 2,261 ± 57.2 | 2,387 ± 58.0 | 2,226 ± 54.1 |
| Breast wt (g) | 638.7 ± 20.42 | 620.2 ± 20.59 | 681.8 ± 21.78 | 630.7 ± 20.15 |
| Thigh wt (g) | 385.0 ± 9.90 | 349.7 ± 9.49 | 372.3 ± 9.58 | 360.9 ± 9.28 |
| Drumstick wt (g) | 319.6 ± 6.31 | 299.3 ± 6.29 | 314.1 ± 6.20 | 295.4 ± 5.83 |
| Wing wt (g) | 247.9 ± 5.64 | 237.9 ± 5.68 | 243.2 ± 5.54 | 227.0 ± 5.17 |
| Carcass yield (% LW) | 72.6 ± 0.57 | 72.1 ± 0.59 | 73.4 ± 0.57 | 72.8 ± 0.57 |
| Breast yield (% CW) | 26.8 ± 0.37 | 27.4 ± 0.40 | 28.6 ± 0.39 | 28.3 ± 0.39 |
| Breast yield (% LW) | 19.4 ± 0.30b | 19.7 ± 0.32ab | 21.0 ± 0.32a | 20.6 ± 0.32ab |
| Thigh yield (% CW) | 16.1 ± 0.33 | 15.4 ± 0.33 | 15.6 ± 0.32 | 16.2 ± 0.33 |
| Thigh yield (% LW) | 11.7 ± 0.23 | 11.1 ± 0.24 | 11.4 ± 0.23 | 11.8 ± 0.24 |
| Drumstick yield (% CW) | 13.4 ± 0.17 | 13.2 ± 0.17 | 13.2 ± 0.17 | 13.3 ± 0.17 |
| Drumstick yield (% LW) | 9.7 ± 0.12 | 9.5 ± 0.13 | 9.7 ± 0.12 | 9.7 ± 0.12 |
| Wing yield (% CW) | 10.4 ± 0.15 | 10.5 ± 0.17 | 10.2 ± 0.15 | 10.2 ± 0.15 |
| Wing yield (% LW) | 7.5 ± 0.11 | 7.6 ± 0.12 | 7.5 ± 0.11 | 7.4 ± 0.11 |
At Target Weight 1 and 2, MOD strains were 48 and 62 d of age, respectively.
a-bDifferent superscripts within the same row represent differences among categories (P < 0.05).
1
Number of birds per strain at target weight 1: Strain E: n = 48; Strain H: n = 32; Strain O: n = 47; Strain S: n = 47.
2
Yields calculated relative to live weight obtained 1 d before processing.
3
Yields calculated as a ratio to the eviscerated carcass weight.
4
Number of birds per strain at target weight 2: Strain E: n = 48; Strain H: n = 42; Strain O: n = 48; Strain S: n = 48.