Table 7.
Means (+ SE) of growth and feed efficiency traitsa by genotype of the five most significant SNPs
| SNP (associated trait) | Genotype | BW28 (g) | BW42 (g) | ADFI (g/d) | RFI (g/d) | RFIa (g/d) |
|---|---|---|---|---|---|---|
| AX_101003762 (BW28) | CC (1,825) | 1148 ± 7.16a | 2418 ± 10.81a | 164.8 ± 0.80a | − 0.05 ± 0.44 | − 0.02 ± 0.47 |
| CT (1,234) | 1133 ± 6.83b | 2399 ± 10.28b | 164.1 ± 0.76ab | 0.02 ± 0.42 | − 0.01 ± 0.46 | |
| TT (255) | 1104 ± 8.06c | 2368 ± 12.19c | 163.2 ± 0.90b | 0.28 ± 0.39 | 0.58 ± 0.43 | |
| P value | 2.14e−06 | 9.55e−06 | 0.03 | 0.87 | 0.64 | |
| AX_172583407 (BW42) | CC (238) | 1107 ± 8.24c | 2363 ± 12.39c | 162.3 ± 0.92c | − 0.02 ± 0.41 | 0.00 ± 0.44 |
| CT (1,222) | 1134 ± 7.05b | 2395 ± 10.57b | 163.7 ± 0.78b | 0.03 ± 0.43 | 0.08 ± 0.47 | |
| TT (1,854) | 1146 ± 7.39a | 2420 ± 11.11a | 165.1 ± 0.82a | − 0.02 ± 0.45 | 0.00 ± 0.49 | |
| P value | 1.06e−08 | 3.64e−13 | 3.59e−07 | 0.99 | 0.97 | |
| AX_75546765 (ADFI) | AA (2,414) | 1141 ± 13.65 | 2411 ± 20.48 | 165.0 ± 1.50a | 0.27 ± 0.82a | 0.27 ± 0.91 |
| AC (841) | 1135 ± 13.29 | 2397 ± 19.93 | 163.2 ± 1.46b | − 0.57 ± 0.80b | − 0.49 ± 0.90 | |
| CC (59) | 1129 ± 14.16 | 2374 ± 21.25 | 159.3 ± 1.56c | − 2.9 ± 0.80c | − 2.14 ± 0.89 | |
| P value | 0.39 | 0.15 | 2.57e−03 | 7.40e−03 | 0.06 | |
| AX_172588157 (RFI) | CC (491) | 1136 ± 7.00 | 2397 ± 10.55 | 162.5 ± 0.77c | − 1.26 ± 0.30c | − 1.06 ± 0.32c |
| CT (1,556) | 1140 ± 5.42 | 2408 ± 8.14 | 164.3 ± 0.60b | − 0.13 ± 0.33b | − 0.08 ± 0.36b | |
| TT (1,267) | 1139 ± 6.44 | 2410 ± 9.70 | 165.3 ± 0.71a | 0.65 ± 0.38a | 0.60 ± 0.41a | |
| P value | 0.26 | 0.06 | 1.60e−03 | 1.95e−03 | 0.02 | |
| AX_172566874(RFIa) | AA (681) | 1142 ± 6.49 | 2415 ± 9.79a | 164.4 ± 0.72 | − 0.56 ± 0.25 | − 1.13 ± 0.28c |
| AG (1,634) | 1138 ± 4.77 | 2405 ± 7.17b | 164.3 ± 0.53 | − 0.03 ± 0.29 | 0.09 ± 0.33b | |
| GG (999) | 1139 ± 5.87 | 2404 ± 8.84b | 164.6 ± 0.65 | 0.43 ± 0.35 | 0.70 ± 0.38a | |
| P value | 0.32 | 0.03 | 0.17 | 0.14 | 3.06e−03 |
aBW28, body weight at 28 d of age; BW42, body weight at 42 d of age; ADFI, average daily feed intake; RFI, residual feed intake; RFIa, residual feed intake adjusted for weight of abdominal fat