Table 2.
Least squares means and standard errors of marbling, backfat thickness, loineye area, and carcass weight traits according to the genotypes of APM1 genes in Hanwoo
| Trait | g.81966377T > C | P | Effect | |||
| CC (N = 3943) | CT (N = 3610) | TT (N =825) | Additive | Dominance | ||
| MAR (1-9) | 4.992 ± 0.03a | 4.942 ± 0.03b | 4.693 ± 0.04c | <0.0001 | 0.298 ± 0.06*** | 0.198 ± 0.08 |
| BFT (mm) | 11.43 ± 0.13c | 12.335 ± 0.08b | 12.558 ± 0.10a | <0.0001 | 1.127 ± 0.16*** | 0.681 ± 0.23 |
| LEA (cm2) | 85.512 ± 0.28b | 86.325 ± 0.22a | 86.563 ± 0.18a | 0.0083 | 0.812 ± 0.36* | 1.287 ± 0.51 |
| CAW (kg) | 390.646 ± 1.38c | 392.985 ± 0.87b | 393.322 ± 1.22a | 0.2677 | 2.675 ± 1.75 | 2.002 ± 2.48 |
| Trait | g.81966364D > I | P | Effect | |||
| D/D (N = 6336) | D/I (N = 1790) | I/I (N = 252) | Additive | Dominance | ||
| MAR (1-9) | 4.544 ± 0.02a | 4.82 ± 0.5b | 4.885 ± 0.13b | <.0001 | −0.341 ± 0.14** | 0.174 ± 0.14 |
| BFT (mm) | 11.815 ± 0.07 | 11.992 ± 0.13 | 12.409 ± 0.37 | 0.179 | −0.594 ± 0.37 | −0.241 ± 0.46 |
| LEA (cm2) | 84.388 ± 0.15 | 84.729 ± 0.29 | 85.518 ± 0.8 | 0.259 | −1.129 ± 0.81 | −0.448 ± 1.01 |
| CAW (kg) | 377.349 ± 0.67 | 377.537 ± 1.27 | 377.809 ± 3.43 | 0.984 | −0.46 ± 3.5 | −0.085 ± 4.32 |
The carcass traits of Hanwoo cattle were based on a grading system (http://www.ekape.or.kr/view/eng/system/beef.asp) from KAPE (Korean Animal Products Evaluation)
MAR marbling score, BFT backfat thickness, LEA loineye area, CAW carcass weight
*P < 0.05, **P < 0.01, and ***P < 0.001
a,b and c Different letters denote statistically significant differences between genotypes