Table 1.
Mean male live BW (LBW) at 48 d post-hatch, and whole carcass weight (CW), CW relative to LBW (CLBW), fat pad weight (FPW), FPW relative to BW (FLBW), FPW relative to CW (FCW), breast muscle weight (BMW), BMW relative to BW (BMLBW), BMW relative to CW (BMCW), tenders muscles weight (TW), TW relative to BW (TLBW), and TW relative to CW (TCW) at 49 d post-hatch within the 4 and 18 h pre-placement holding time (pht) treatment groups, across the in ovo and subcutaneous injection treatment groups.1
| Treatment | 4 h pht | 18 h pht |
|---|---|---|
| Variable | ||
| LBW (kg) | 3.64 ± 0.054 | 3.66 ± 0.051 |
| CW (kg) | 2.62 ± 0.038 | 2.63 ± 0.036 |
| CLBW (%) | 71.9 ± 0.14 | 71.9 ± 0.13 |
| FPW (kg) | 0.053 ± 0.0013 | 0.052 ± 0.0013 |
| FLBW (%) | 1.46 ± 0.037 | 1.42 ± 0.035 |
| FCW (%) | 2.04 ± 0.053 | 1.97 ± 0.051 |
| BMW (kg) | 0.65 ± 0.014 | 0.65 ± 0.013 |
| BMLBW (%) | 17.7 ± 0.16 | 17.8 ± 0.16 |
| BMCW (%) | 24.6 ± 0.22 | 24.7 ± 0.21 |
| TW (kg) | 0.13 ± 0.002 | 0.14 ± 0.002 |
| TLBW (%) | 3.68 ± 0.049 | 3.79 ± 0.046 |
| TCW (%) | 5.11 ± 0.065 | 5.28 ± 0.061 |
1
Data from 6 birds within each of 30 replicate pens (N = 30) were used to calculate treatment means.