Table 6.
Results of the association analysis between a number of copies of the MSTN alleles and carcass traits (LSM ± Standard error) in Colored Polish Merino sheep.
| Trait | Unit | Allele | LSM 1 ± Standard Error | p-Value | |||
|---|---|---|---|---|---|---|---|
| Number of Copies of the Allele | |||||||
|
MSTN-A-1; MSTN-E and MSTN-E1-0 |
n |
MSTN-A-2; MSTN-E and MSTN-E1-1 |
n | ||||
| Carcass parts | |||||||
| Fore part of the carcass weight | g | MSTN-A | 2645 ± 21.56 | 25 | 2628 ± 12.60 | 79 | 0.491 |
| MSTN-E | 2627 ± 12.25 | 92 | 2633 ± 26.52 | 14 | 0.871 | ||
| MSTN-E1 | 2624 ± 12.45 | 96 | 2624 ± 35.15 | 10 | 0.903 | ||
| Full loin part weight | g | MSTN-A | 1707 ± 17.48 | 25 | 1711 ± 10.33 | 79 | 0.824 |
| MSTN-E | 1711 ± 9.89 | 92 | 1709 ± 21.43 | 14 | 0.947 | ||
| MSTN-E1 | 1708 ± 9.81 | 96 | 1740 ± 27.95 | 10 | 0.266 | ||
| Leg part weight | g | MSTN-A | 2255 ± 17.92 | 25 | 2214 ± 8.91 | 79 | 0.055 |
| MSTN-E | 2219 ± 7.91 | 92 | 2228 ± 22.06 | 14 | 0.695 | ||
| MSTN-E1 | 2221 ± 8.01 | 96 | 2192 ± 24.95 | 10 | 0.266 | ||
| Carcass cuts | |||||||
| Scrag weight | kg | MSTN-A | 389 ± 7.53 a | 25 | 370 ± 4.65 b | 79 | 0.016 |
| MSTN-E | 371 ± 4.92 | 92 | 384 ± 9.43 | 14 | 0.207 | ||
| MSTN-E1 | 373 ± 5.58 | 96 | 363 ± 13.53 | 10 | 0.450 | ||
| Middle neck weight | g | MSTN-A | 535 ± 11.52 | 25 | 526 ± 7.72 | 79 | 0.429 |
| MSTN-E | 526 ± 7.62 | 92 | 530 ± 13.39 | 14 | 0.759 | ||
| MSTN-E1 | 527 ± 8.39 | 96 | 510 ± 19.05 | 10 | 0.367 | ||
| Shoulder weight | g | MSTN-A | 1054 ± 11.90 | 25 | 1051 ± 7.09 | 79 | 0.811 |
| MSTN-E | 1053 ± 6.05 | 92 | 1040 ± 13.90 | 14 | 0.404 | ||
| MSTN-E1 | 1051 ± 6.06 | 96 | 1044 ± 17.94 | 10 | 0.674 | ||
| Fore shank weight | g | MSTN-A | 320 ± 3.82 a | 25 | 308 ± 2.10 b | 79 | 0.005 |
| MSTN-E | 308 ± 2.07 a | 92 | 322 ± 4.91 b | 14 | 0.009 | ||
| MSTN-E1 | 311 ± 2.31 | 96 | 299 ± 7.87 | 10 | 0.147 | ||
| Breast and flank weight | g | MSTN-A | 1049 ± 14.25 | 25 | 1031 ± 8.02 | 79 | 0.268 |
| MSTN-E | 1032 ± 7.65 | 92 | 1050 ± 17.70 | 14 | 0.340 | ||
| MSTN-E1 | 1034 ± 7.22 | 96 | 1045 ± 22.07 | 10 | 0.637 | ||
| Rib weight | g | MSTN-A | 462 ± 6.88 | 25 | 471 ± 4.01 | 79 | 0.223 |
| MSTN-E | 470 ± 3.86 | 92 | 455 ± 8.72 | 14 | 0.100 | ||
| MSTN-E1 | 469 ± 3.79 | 96 | 460 ± 11.16 | 10 | 0.483 | ||
| Loin weight | g | MSTN-A | 495 ± 9.61 | 25 | 516 ± 5.26 | 79 | 0.053 |
| MSTN-E | 515 ± 5.05 | 92 | 500 ± 12.39 | 14 | 0.279 | ||
| MSTN-E1 | 510 ± 4.40 | 96 | 537 ± 14.42 | 10 | 0.083 | ||
| Tenderloin weight | g | MSTN-A | 60 ± 1.38 | 25 | 58 ± 0.85 | 79 | 0.114 |
| MSTN-E | 58 ± 0.77 | 92 | 58 ± 1.64 | 14 | 0.837 | ||
| MSTN-E1 | 58 ± 0.77 | 96 | 56 ± 2.51 | 10 | 0.359 | ||
| Leg weight | g | MSTN-A | 1856 ± 16.45 a | 25 | 1813 ± 8.75 b | 79 | 0.020 |
| MSTN-E | 1817 ± 8.93 | 92 | 1820 ± 18.95 | 14 | 0.899 | ||
| MSTN-E1 | 1820 ± 8.35 | 96 | 1798 ± 24.17 | 10 | 0.372 | ||
| Hind shank weight | g | MSTN-A | 397 ± 4.99 | 25 | 401 ± 3.04 | 79 | 0.499 |
| MSTN-E | 399 ± 2.90 a | 92 | 414 ± 6.30 b | 14 | 0.027 | ||
| MSTN-E1 | 401 ± 2.99 | 96 | 415 ± 9.83 | 10 | 0.155 | ||
| Leg | |||||||
| Muscle tissue yield | % | MSTN-A | 71.6 ± 0.49 | 25 | 71.8 ± 0.29 | 79 | 0.752 |
| MSTN-E | 71.8 ± 0.29 | 92 | 71.6 ± 0.60 | 14 | 0.753 | ||
| MSTN-E1 | 71.8 ± 0.27 | 96 | 71.2 ± 0.78 | 10 | 0.457 | ||
| Fat tissue yield | % | MSTN-A | 12.8 ± 0.56 | 25 | 12.4 ± 0.25 | 79 | 0.510 |
| MSTN-E | 12.6 ± 0.28 | 92 | 12.3 ± 0.59 | 14 | 0.664 | ||
| MSTN-E1 | 12.5 ± 0.25 | 96 | 13.7 ± 0.73 | 10 | 0.094 | ||
| Bone tissue yield | % | MSTN-A | 15.1 ± 0.28 | 25 | 15.2 ± 0.16 | 79 | 0.690 |
| MSTN-E | 15.1 ± 0.15 | 92 | 15.7 ± 0.34 | 14 | 0.123 | ||
| MSTN-E1 | 15.2 ± 0.15 | 96 | 14.6 ± 0.44 | 10 | 0.151 | ||
1 LSM = Least Squares Mean; values with different superscripts (a, b) within a row are significantly different (p < 0.05). Values in bold were applied to highlight highly significant effect of a number of copies of the MSTN alleles on carcass traits.