Table 4.

Association analysis of SNP in POMC gene with reproduction traits (mean ± SE).

SNP	Genotypes (n)	1EW300 (g)	2E300 (n)	3FR (%)	4HEHR (%)	5FEHR (%)
g.958 G > A	GG (181)	53.37 ± 0.403	86.93 ± 0.227	95.99 ± 0.95a	88.35 ± 1.52A,a	91.80 ± 1.42a
	GA (112)	53.26 ± 0.563	86.96 ± 0.295	90.85 ± 1.90b	79.84 ± 2.71B,b	86.09 ± 2.53b
	AA (24)	53.75 ± 1.250	87.17 ± 0.726	90.28 ± 3.61a,b	77.08 ± 5.57b	86.81 ± 5.40a,b
g.1374 G > C	GG (197)	52.87 ± 0.393b	87.04 ± 0.220	92.51 ± 1.29	83.04 ± 1.83	88.79 ± 1.72
	GC (96)	54.43 ± 0.605a	86.66 ± 0.325	95.75 ± 1.32	86.20 ± 2.41	89.58 ± 2.20
	CC (24)	53.13 ± 1.077a,b	87.50 ± 0.626	95.83 ± 2.30	89.58 ± 3.45	93.75 ± 2.98
g.1393 G > A	GG (240)	53.46 ± 0.362	87.00 ± 0.200	94.17 ± 0.97	85.17 ± 1.53	90.17 ± 1.40
	GA (62)	53.62 ± 0.745	86.98 ± 0.398	93.28 ± 2.24	84.27 ± 3.34	88.98 ± 3.11
	AA (15)	53.15 ± 1.447	86.13 ± 0.861	88.89 ± 7.03	74.44 ± 7.61	78.89 ± 7.88
g.1817 C > T	CC (26)	52.50 ± 1.047	86.42 ± 0.800	85.90 ± 5.82b	74.36 ± 6.62b	80.77 ± 6.65b
	CT (96)	53.44 ± 0.594	86.66 ± 0.302	94.62 ± 1.38a	84.37 ± 2.38a,b	88.98 ± 2.08a,b
	TT (195)	52.44 ± 0.403	87.18 ± 0.217	94.36 ± 1.06a	85.90 ± 1.68a	90.77 ± 1.57a
g.1918G > A	GG (194)	53.09 ± 0.413b	86.89 ± 0.228	94.76 ± 1.11	85.44 ± 1.77	89.48 ± 1.66
	GA (97)	53.30 ± 0.553a,b	86.88 ± 0.320	92.35 ± 1.63	83.08 ± 2.44	89.78 ± 2.14
	AA (26)	55.58 ± 1.050a	87.77 ± 0.465	91.35 ± 4.30	82.69 ± 5.17	87.50 ± 5.13

^a,b,A,BMeans of different genotypes at the same locus with the different uppercase letters were extremely significant (P < 0.01), and the different lowercase letters was significant (P < 0.05); The difference between the same letters was not significant (P > 0.05).

Means without superscript was not significant (P > 0.05).

Numbers in parentheses indicated the number of individuals.

Abbreviation: SNP, single nucleotide polymorphism.

¹EW300 = egg weight at 300d of age.

²E300 = egg production at 300d of age.

³FR = fertilization rate.

⁴HEHR = hatching rate of hatching eggs.

⁵FEHR = hatching rate of fertilized eggs.