Table 4.
Associations of polymorphisms in CD163 and CD169 with growth and meat quality traits

Traits	CD163			CD169
	CC (121)	TC (182)	TT (40)	GG (231)	AG (110)	AA (2)
	ADG (kg/day)*	0.228 ± 0.081	0.220 ± 0.097	0.231 ± 0.063	0.224 ± 0.094	0.227 ± 0.076	0.203 ± 0.00
Moisture (%)	73.69 ± 2.05	73.99 ± 1.57	74.55 ± 0.98	74.05 ± 1.64	73.75 ± 1.9	75.08 ± 0.22
Crude Protein (%)	22.03 ± 1.76	22.31 ± 1.54	22.11 ± 1.39	22.16 ± 1.54	22.28 ± 1.74	21.45 ± 0.01
Crude Fat (%)	2.84 ± 1.85a	2.41 ± 1.19b	1.92 ± 0.92	2.44 ± 1.35	2.65 ± 1.68	2.40 ± 0.46
Crude ash (%)	1.05 ± 0.14	1.07 ± 0.13	1.05 ± 0.14	1.06 ± 0.14	1.06 ± 0.14	1.07 ± 0.23
Cholesterol (mg/100 g)	131.84 ± 84.62	147.98 ± 86.96	152.65 ± 73.27	144.69 ± 85.18	139.39 ± 84.74	83.14 ± 78.31
Drip loss (%)	5.04 ± 1.65	5.27 ± 1.92	4.56 ± 1.7	5.23 ± 1.87	4.92 ± 1.71	4.44 ± 2.01
Cook loss (%)	32.57 ± 3.47	31.98 ± 3.53	32.51 ± 3.6	32.42 ± 3.40	31.94 ± 3.83	33.62 ± 2.79
Sheer Force (g)	1778 ± 410	1688 ± 445	1824 ± 457	1753 ± 425	1693 ± 452	2042 ± 862
pH (24 hour)	5.66 ± 0.25	5.63 ± 0.27	5.64 ± 0.19	5.63 ± 0.25	5.66 ± 0.28	5.63 ± 0.04
Marbling	2.59 ± 1.07	2.33 ± 1.01	2.20 ± 0.79	2.38 ± 0.99	2.43 ± 1.07	3.75 ± 1.77
Texture	2.89 ± 0.44	2.86 ± 0.39	2.83 ± 0.53	2.87 ± 0.42	2.86 ± 0.43	3.17 ± 0.24
Redness	5.66 ± 2.02	5.81 ± 2.11	5.62 ± 1.86	5.76 ± 2.04	5.68 ± 2.06	5.59 ± 2.79
Yellowness	7.31 ± 1.82	7.60 ± 1.86	6.94 ± 1.57	7.38 ± 1.79	7.52 ± 1.88	7.94 ± 3.19
Lightness	52.31 ± 5.60	53.12 ± 5.43	51.22 ± 5.09	52.48 ± 5.36	54.13 ± 7.82	53.01 ± 5.80
Total Acceptance	2.94 ± 0.29	2.90 ± 0.28	2.92 ± 0.38	2.91 ± 0.3	2.92 ± 0.3	3.00 ± 0.00
Tenderness	3.11 ± 0.74	3.07 ± 0.72	2.95 ± 0.68	3.06 ± 0.70a	3.07 ± 0.75a	4.42 ± 0.59b
Juiciness	3.01 ± 0.39	3.14 ± 1.82	2.95 ± 0.3	3.10 ± 1.63	2.99 ± 0.38	3.17 ± 0.47
Flavor	2.96 ± 0.39	2.96 ± 0.42	2.86 ± 0.27	2.93 ± 0.39	2.98 ± 0.39	2.83 ± 0.24

* ADG is average daily gain. For ADG only, numbers of animals are 92, 128, and 31 corresponding to genotypes CC, CT, and TT of CD163 gene and 173, 79, and 1 corresponding to GG, AG, and AA of CD169 gene, respectively. For meat quality traits, number of animals of each genotype for both genes is represented in brackets, and all traits are presented as mean ± standard deviation (S.D.). Within a single gene, columns with different superscript letters are significantly different at P<0.05.