Table 1.
Associations between the absence/presence of KRTAP20-1 variants and various wool traits
| Trait1 | Variant2 | Mean ± SE3 | P | |
|---|---|---|---|---|
| Absent | Present | |||
| GFW (kg) |
A | 2.47 ± 0.07 | 2.38 ± 0.05 | 0.140 |
| B | 2.40 ± 0.05 | 2.33 ± 0.08 | 0.310 | |
| C | 2.35 ± 0.05 | 2.48 ± 0.06 | 0.028 | |
| Yield (%) |
A | 71.8 ± 1.00 | 73.0 ± 0.71 | 0.222 |
| B | 72.6 ± 0.68 | 74.1 ± 1.23 | 0.167 | |
| C | 73.6 ± 0.74 | 71.2 ± 0.88 | 0.007 | |
| MFD (µm) |
A | 20.3 ± 0.28 | 19.2 ± 0.20 | <0.001 |
| B | 19.5 ± 0.20 | 19.7 ± 0.35 | 0.561 | |
| C | 19.4 ± 0.22 | 19.6 ± 0.25 | 0.436 | |
| FDSD (µm) |
A | 4.32 ± 0.10 | 4.01 ± 0.07 | 0.002 |
| B | 4.08 ± 0.07 | 4.14 ± 0.13 | 0.616 | |
| C | 4.09 ± 0.08 | 4.08 ± 0.09 | 0.956 | |
| PF (%) |
A | 4.05 ± 0.52 | 2.09 ± 0.37 | <0.001 |
| B | 2.51 ± 0.36 | 3.23 ± 0.65 | 0.213 | |
| C | 2.61 ± 0.40 | 2.45 ± 0.47 | 0.736 | |
1GFW = greasy fleece weight; Yield = wool yield; MFD = mean fiber diameter; FDSD = fiber diameter standard deviation; CVFD = coefficient of variation of fiber diameter; PF = prickle factor (percentage of fibers over 30 microns).
2A total of 319 sheep are included in the model when variants that occurred at a frequency under 5% are excluded. Variant A is present in 266 sheep and absent in 53 sheep, variant B is present in 33 sheep and absent in 286 sheep, and variant C is present in 74 sheep and absent in 245 sheep.
3Predicted means and standard error of those means are derived from GLMMs with gender and sire included in the models as fixed and random factors, respectively.
P < 0.05 are in bold.