Table 1.

Association between the presence or absence of ovine KRTAP6-1 variants and wool traits in New Zealand Romney ewes.

Trait${}^{\mathrm{1}}$	Variant${}^{\mathrm{2}}$	Mean $\pm$ SE${}^{\mathrm{3}}$		$P$ value
		Presence	Absence
MFD ($\mathrm{\mu }$m)	$A$	$\mathbf{35.6}\pm \mathbf{0.20}$	$\mathbf{36.7}\pm \mathbf{0.30}$	$\mathbf{0.002}$
	$B$	$\mathrm{35.9}\pm \mathrm{0.19}$	$\mathrm{36.0}\pm \mathrm{0.37}$	0.678
FDSD ($\mathrm{\mu }$m)	$A$	$\mathrm{8.6}\pm \mathrm{0.08}$	$\mathrm{8.5}\pm \mathrm{0.13}$	0.319
	$B$	$\mathrm{8.5}\pm \mathrm{0.08}$	$\mathrm{8.8}\pm \mathrm{0.14}$	0.166
CVFD (%)	$A$	$\mathrm{24.2}\pm \mathrm{0.22}$	$\mathrm{23.1}\pm \mathrm{0.34}$	0.005
	$B$	$\mathrm{23.8}\pm \mathrm{0.21}$	$\mathrm{24.3}\pm \mathrm{0.41}$	0.204
CEM (%)	$A$	$\mathrm{11.8}\pm \mathrm{0.24}$	$\mathrm{11.1}\pm \mathrm{0.36}$	0.120
	$B$	$\mathrm{11.4}\pm \mathrm{0.22}$	$\mathrm{12.2}\pm \mathrm{0.43}$	0.099
MFC (${}^{\circ }$ mm${}^{-\mathrm{1}}$)	$A$	$\mathrm{62.6}\pm \mathrm{0.45}$	$\mathrm{62.2}\pm \mathrm{0.70}$	0.603
	$B$	$\mathrm{62.2}\pm \mathrm{0.43}$	$\mathrm{63.5}\pm \mathrm{0.82}$	0.169
Medulation (%)	$A$	$\mathrm{1.4}\pm \mathrm{0.17}$	$\mathrm{1.0}\pm \mathrm{0.26}$	0.140
	$B$	$\mathrm{1.4}\pm \mathrm{0.16}$	$\mathrm{1.1}\pm \mathrm{0.31}$	0.386

${}^{\mathrm{1}}$ MFD – mean fibre diameter; FDSD – fibre diameter standard deviation; CVFD – coefficient of variation in fibre diameter; CEM – coarse edge measurement (the percentage of fibres that are 10 $\mathrm{\mu }$m greater than the mean fibre diameter); MFC – mean fibre curvature. ${}^{\mathrm{2}}$ Of 243 Romney ewes that had common genotypes (i.e. AA, AB or BB), $A$ was present in 179 ewes and absent in 64 ewes, and $B$ was present in 192 ewes and absent in 51 ewes. ${}^{\mathrm{3}}$ Estimated marginal means and standard errors (SE) of those means from general linear mixed models, with $P<\mathrm{0.05}$ being shown in bold.