Table 2 Impact of MRF-supplementation on production, quality, feed utility
| Â | Factor | MRF-supplemented | Control | Statistical observations | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
μ | σ | η | μ | σ | η | B | P-value | Observed effect | ||
Bird weight | Week 0 (kg/pen) | 7.278 | 0.32 | 7.21 | 7.30 | 0.33 | 7.26 | 0.28 | 0.783 | Lower with MRF |
Week 24 (kg/pen) | 8.010 | 0.39 | 8.01 | 8.00 | 0.40 | 8.03 | 0.01 | 0.993 | Lower with MRF | |
Dweight (kg/pen) | 0.723 | 0.28 | 0.69 | 0.70 | 0.26 | 0.76 | −0.06 | 0.955 | Lower with MRF | |
Feed utility | Feed conversion efficiency | 0.472 | 0.02 | 0.47 | 0.44 | 0.03 | 0.45 | −6.06 | 2.12e−07 | Higher with MRF |
Mean feed intake (g/bird/day) | 0.125 | 0.003 | 0.13 | 0.122 | 0.003 | 0.12 | −2.02 | 0.049 | Higher with MRF | |
Productivity | Proportional laying days (%) | 95.960 | 2.42 | 97.00 | 89.56 | 6.63 | 90.00 | −6.94 | 9.51e−09 | Higher with MRF |
Total egg count (n) | 644.600 | 16.49 | 651.00 | 601.76 | 44.38 | 606.00 | −6.59 | 3.33e−08 | Higher with MRF | |
Total egg mass (Score) | 235.720 | 8.10 | 236.00 | 216.52 | 15.09 | 221.00 | −10.0 | 7.98e−13 | Higher with MRF | |
Total egg weight (kg/pen) | 39.601 | 13.53 | 39.728 | 36.37 | 2.545 | 37.146 | -10.3 | 1.90e−13 | Higher with MRF | |
Quality | Albumin height (mm) | 4.86 | 0.79 | 5.00 | 4.83 | 0.92 | 4.90 | −0.18 | 0.857 | Higher with MRF |
Haugh unit (unitless) | 64.93 | 8.19 | 66.90 | 65.25 | 9.59 | 66.40 | 0.18 | 0.857 | Higher with MRF | |
Mean egg weight (g) | 62.60 | 4.38 | 64.60 | 62.00 | 4.91 | 62.70 | −0.52 | 0.603 | Higher with MRF | |
Shell strength (kg/m3) | 3.54 | 0.93 | 3.69 | 3.88 | 0.69 | 3.92 | 1.38 | 0.174 | Lower with MRF | |
Shell thickness (mm) | 0.35 | 0.04 | 0.36 | 0.32 | 0.04 | 0.31 | −2.57 | 0.013 | Higher with MRF | |
Yolk colour (unitless) | 2.88 | 0.52 | 3.00 | 3.12 | 0.59 | 3.00 | 1.44 | 0.157 | No difference | |