Table 2 Means for eggshell-quality traits among genotypes and the SNP contribution to phenotypic variance (CPV) of the single-nucleotide polymorphism

SCNN1b

rs13532836

CC(214)

TC(69)

TT(53)

ESP

13.95(1.30)^ab

13.81(1.35)^b

14.05(1.18)^a

NA

EW

55.58(3.88)^ab

56.53(4.03)^b

55.19(3.69)^a

1.04

SCNN1b

rs13532838

CC(81)

TC(164)

TT(90)

ESP

13.84(1.45)^b

14.08(1.30)^a

13.89(1.04)^ab

0. 28

ESS

2.96(0.60)^b

3.07(0.59)^ab

3.16(0.68)^a

1.14

EST

0.31(0.02)^b

0.32(0.02)^ab

0.32(0.02)^a

0.25

SCNN1b

rs14075350

EST

CC(151)

CT(158)

TT(28)

0.60

0.32(0.02)^a

0.31(0.02)^b

0.32(0.02)^ab

SCNN1g

rs15009191

CC(232)

CT(91)

TT(13)

ESP

13.93(1.20)^ab

14.09(1.47)^a

13.65(1.16)^b

NA

EST

0.32(0.02)^a

0.31(0.02)^b

0.31(0.02)^b

3.24

SCNN1d

rs15181931

CC(179)

CA(126)

AA(31)

ESP

14.16(1.34)^a

13.81(1.22)^b

13.52(1.00)^c

3.96

EW

55.36(3.91)^a

55.78(3.74)^ab

56.80(3.42)^b

0.83

SCNN1d

rs14282978

CC(1)

CT(33)

TT(302)

ESP

13.99(0.00)^ab

13.44(1.08)^b

14.02(1.28)^a

6.99

SCNN1d

rs15181934

CC(135)

TC(19)

TT(183)

ESP

13.83 (1.16)^b

14.16(1.34)^c

13.33(1.15)^a

6.35