Table 1.
Least-squares means (and standard errors) for live weight, loin dimensionsb and spine traitsc for Texel lambs of each TM-QTL genotype.d
| Trait | Genotype |
Site | Sex | Rearing rank | TM-QTL genotype | Live weight | R2a | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| +S/+D |
TMS/+D |
+S/TMD |
TMS/TMD |
|||||||||||
| n = 39 | n = 52 | n = 17 | n = 34 | |||||||||||
| Live weight | 30.53 | (1.004) | 31.78 | (0.855) | 30.59 | (1.402) | 31.45 | (1.094) | <0.001 | 0.104 | <0.001 | 0.672 | – | 0.253 |
| CT_MLL_W | 66.27b | (1.034) | 69.49a | (0.881) | 67.12a,b | (1.444) | 68.82a | (1.127) | 0.084 | 0.069 | 0.199 | 0.034 | – | 0.126 |
| CT_MLL_D | 28.45b | (0.779) | 30.96a | (0.663) | 29.28a,b | (1.087) | 30.44a | (0.848) | 0.234 | 0.411 | 0.001 | 0.029 | – | 0.163 |
| CT_MLL_A | 1684c | (64.94) | 1883a | (55.33) | 1689b,c | (90.68) | 1851a,b | (70.76) | 0.385 | 0.633 | <0.001 | 0.021 | – | 0.157 |
| CT_MLL_W_LWT | 66.27b | (0.591) | 68.43a | (0.507) | 67.06a,b | (0.825) | 68.04a | (0.646) | <0.001 | 0.400 | 0.059 | 0.001 | <0.001 | 0.716 |
| CT_MLL_D_LWT | 28.45b | (0.560) | 30.28a | (0.481) | 29.25a,b | (0.782) | 29.94a | (0.612) | 0.007 | 0.008 | 0.148 | 0.029 | <0.001 | 0.570 |
| CT_MLL_A_LWT | 1684c | (37.68) | 1817a | (32.36) | 1685b,c | (52.63) | 1803a,b | (41.17) | <0.001 | 0.002 | 0.353 | 0.004 | <0.001 | 0.718 |
| VNTHOR | 12.69b,c | (0.064) | 12.65c | (0.055) | 12.89a,b | (0.090) | 12.88a | (0.070) | 0.026 | 0.350 | 0.044 | 0.006 | . | 0.174 |
| VNLUM | 6.356a | (0.074) | 6.387a | (0.063) | 6.111b | (0.104) | 6.143b | (0.081) | 0.092 | 0.427 | 0.061 | 0.009 | . | 0.149 |
| VNT + L | 19.05 | (0.063) | 19.04 | (0.054) | 19.00 | (0.088) | 19.02 | (0.069) | 0.759 | 0.981 | 0.645 | 0.967 | . | 0.011 |
| SPLTHOR | 255.6 | (3.941) | 260.7 | (3.358) | 257.9 | (5.504) | 262.5 | (4.295) | 0.003 | 0.429 | 0.034 | 0.503 | . | 0.122 |
| SPLLUM | 184.4a,b | (2.411) | 186.8a | (2.054) | 176.6c | (3.366) | 180.3b,c | (2.627) | 0.208 | 0.742 | 0.029 | 0.018 | . | 0.125 |
| SPLT + L | 440.0 | (5.138) | 447.5 | (4.378) | 434.5 | (7.176) | 442.8 | (5.599) | 0.004 | 0.447 | 0.015 | 0.329 | . | 0.128 |
| VLTHOR | 20.13 | (0.276) | 20.60 | (0.235) | 20.00 | (0.386) | 20.38 | (0.301) | 0.009 | 0.246 | 0.007 | 0.352 | . | 0.133 |
| VLLUM | 29.03 | (0.292) | 29.29 | (0.249) | 28.91 | (0.408) | 29.36 | (0.319) | <0.001 | 0.702 | 0.045 | 0.657 | . | 0.124 |
| VLT + L | 23.10 | (0.265) | 23.51 | (0.226) | 22.86 | (0.370) | 23.28 | (0.289) | 0.004 | 0.443 | 0.007 | 0.332 | . | 0.135 |
| SPLTHOR_LWT | 255.6 | (2.495) | 256.9 | (2.143) | 257.7 | (3.485) | 259.7 | (2.726) | 0.379 | 0.456 | 0.088 | 0.610 | <0.001 | 0.650 |
| SPLLUM_LWT | 184.4a | (2.033) | 185.2a | (1.746) | 176.5b | (2.839) | 179.1b | (2.221) | 0.151 | 0.513 | 0.333 | 0.007 | <0.001 | 0.382 |
| SPLT + L_LWT | 440.0 | (2.720) | 442.0 | (2.336) | 434.2 | (3.798) | 438.8 | (2.971) | 0.061 | 0.241 | 0.575 | 0.289 | <0.001 | 0.758 |
| VLTHOR_LWT | 20.13 | (0.160) | 20.32 | (0.138) | 19.99 | (0.224) | 20.18 | (0.175) | 0.051 | 0.772 | 0.595 | 0.531 | <0.001 | 0.710 |
| VLLUM_LWT | 29.03 | (0.147) | 28.97 | (0.126) | 28.89 | (0.205) | 29.13 | (0.160) | 0.350 | <0.001 | 0.011 | 0.721 | <0.001 | 0.781 |
| VLT + L_LWT | 23.10 | (0.130) | 23.22 | (0.112) | 22.85 | (0.182) | 23.07 | (0.142) | 0.023 | 0.185 | 0.488 | 0.297 | <0.001 | 0.793 |
Within a row, means with common letters (a–c), or no letters, in their superscript are not significantly different (P > 0.05).
LWT, live weight (kg) fitted as a covariate in model.
Proportion of variance accounted for by the whole GLM model.
CT_MLL_W, width of M. longissimus lumborum (mm); CT_MLL_D, depth of M. longissimus lumborum (mm); CT_MLL_A, area of M. longissimus lumborum (mm2).
VNTHOR, number of thoracic vertebrae; VNLUM, number of lumbar vertebrae; VNT+L, number of thoracolumbar vertebrae; SPLTHOR, length of thoracic spine region (mm); SPLLUM, length of lumbar spine region (mm); SPLT+L, length of thoracolumbar spine region (mm); VLTHOR, average length of individual thoracic vertebrae (mm); VLLUM, average length of individual lumbar vertebrae (mm); VLT+L, average length of individual thoracolumbar vertebrae (mm).
+S/+D, homozygote non-carrier; TMS/+D, heterozygote carrier inheriting TM-QTL from sire; +S/TMD, heterozygote carrier inheriting TM-QTL from dam; TMS/TMD, homozygote carrier.