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. 2021 Apr 23;11(5):1228. doi: 10.3390/ani11051228

Table 6.

Processing weight and yield of broilers from different hatch window periods (HWP) within a single hatch window provided feed and water (FAW) in the hatching basket compared to a control (CTL) 1.

Item Live Hot Carcass Hot Fat Pad Chilled Carcass
Weight (g) Weight (g) Yield (%) Weight (g) Yield (%) Weight (g) Yield (%)
Interaction means
Early—CTL 3152 2389 75.74 46.8 1.49 2432 77.14
Early—FAW 3200 2414 75.39 48.0 1.50 2457 76.75
Pre-peak—CTL 3216 2424 75.34 49.1 1.53 2471 76.83
Pre-peak—FAW 3242 2442 75.29 46.4 1.42 2484 76.61
Post-peak—CTL 3296 2478 75.17 50.8 1.55 2525 76.58
Post-peak—FAW 3263 2456 75.24 50.8 1.52 2503 76.70
Late—CTL 3250 2433 74.87 50.8 1.57 2480 76.28
Late—FAW 3192 2390 74.86 52.2 1.64 2431 76.14
SEM 39.2 32.6 0.346 1.88 0.058 33.2 0.362
Main effect of hatch period
Early 3176 b 2401 75.56 47.4 1.49 2445 76.95
Pre-peak 3229 a,b 2433 75.32 47.8 1.48 2478 76.72
Post-peak 3280 a 2467 75.20 50.8 1.54 2514 76.64
Late 3221 a,b 2411 74.87 51.5 1.60 2455 76.21
SEM 26.1 21.7 0.231 1.25 0.039 22.1 0.242
Main effect of basket
CTL 3229 2431 75.28 49.4 1.53 2477 76.71
FAW 3224 2425 75.20 49.4 1.52 2469 76.55
SEM 18.1 15.1 0.160 0.86 0.027 15.3 0.167
p-values
HWP 0.033 0.105 0.157 0.021 0.049 0.088 0.140
Basket 0.868 0.783 0.692 0.993 0.685 0.684 0.477
HWP × basket 0.390 0.602 0.917 0.574 0.329 0.583 0.882

a,b Means within a column that do not share a common superscript are significantly different (p < 0.05) as determined by a Tukey’s multiple comparison test. 1 Mean values of 4 male birds randomly sampled from each HWP within each of 13 replicate pens per basket treatment.