Table 1.
Summary statistics on phenotypic data for the high energy (HE) and low energy (LE) diets
| Trait | Number of recordsa | Mean | Standard deviation | |||
|---|---|---|---|---|---|---|
| Diet | HE | LE | HE | LE | HE | LE |
| Egg production traits | ||||||
| EPR (%) | 1342 | 1340 | 84.22 | 83.26 | 6.12 | 7.17 |
| EPR1 (%) | 1344 | 1342 | 72.12 | 76.44 | 9.40 | 9.35 |
| EPR2 (%) | 1342 | 1338 | 91.14 | 89.28 | 6.06 | 8.16 |
| EPR3 (%) | 1344 | 1342 | 85.32 | 81.97 | 6.35 | 7.62 |
| Egg quality traits at 50 weeks of age | ||||||
| ESshape | 12,375 | 12,403 | 1.1 | 1.1 | 0.02 | 0.02 |
| EW (g) | 13,547 | 13,603 | 61.11 | 60.59 | 4.78 | 4.74 |
| SLE (mm) | 12,378 | 12,409 | 43.37 | 43.32 | 1.29 | 1.28 |
| ESC | 13,528 | 13,580 | 24.78 | 25.31 | 9.66 | 10.09 |
| LSS | 13,548 | 13,596 | 66.77 | 66.91 | 4.57 | 4.72 |
| RSS | 13,546 | 13,605 | 13.72 | 13.42 | 3.16 | 3.27 |
| YSS | 13,445 | 13,493 | 28.3 | 28.22 | 2.65 | 2.81 |
| ESS (N) | 12,379 | 12,410 | 39.15 | 39.58 | 7.51 | 7.33 |
| ESSTIF (mm) | 12,388 | 12,418 | 193.42 | 191.49 | 29.53 | 28.57 |
| EMTSP | 6959 | 6283 | 1.68 | 1.55 | 0.74 | 0.72 |
| HU | 6938 | 6257 | 73.03 | 74.45 | 7.69 | 8.02 |
| YOLKIND | 6157 | 6808 | 0.27 | 0.27 | 0.02 | 0.02 |
| Egg quality traits at 70 weeks of age | ||||||
| ESshape | 11,315 | 10,983 | 1.1 | 1.1 | 0.02 | 0.02 |
| EW (g) | 12,945 | 12,804 | 61.05 | 60.61 | 5.04 | 4.95 |
| SLE (mm) | 11,329 | 11,004 | 43.41 | 43.36 | 1.37 | 1.35 |
| ESC | 12,929 | 12,259 | 25.4 | 25.48 | 10.18 | 10.64 |
| LSS | 12,937 | 12,272 | 67.09 | 66.99 | 4.92 | 5.05 |
| RSS | 12,942 | 12,274 | 13.4 | 13.3 | 3.27 | 3.42 |
| YSS | 12,833 | 12,188 | 28.35 | 28.23 | 2.65 | 2.86 |
| ESS (N) | 11,327 | 11,007 | 37.4 | 37.82 | 7.53 | 7.75 |
| ESSTIF (mm) | 11,332 | 11,004 | 192.83 | 190.46 | 29.98 | 30.53 |
| EMTSP | 6459 | 6705 | 1.63 | 1.63 | 0.72 | 0.71 |
| HU | 6437 | 6683 | 64.88 | 67.28 | 9.31 | 9.46 |
| YOLKIND | 5729 | 5491 | 0.27 | 0.27 | 0.02 | 0.02 |
aNumber of cages for production traits and number of eggs for quality traits