TABLE 2.

Effect of muscle group¹ on the relative² mRNA expression measured in pectoralis major muscle.

Gene (cluster)	SG	FG-C	FG-WS	FG-WB	FG-WSWB	P
MYH13 (1)	2.10 ± 0.45 (a)	0.98 ± 0.25 (b)	0.54 ± 0.13 (bc)	0.30 ± 0.07 (c)	0.29 ± 0.05 (c)	0.005
MYH1E (1)	2.49 ± 0.22 (a)	0.66 ± 0.20 (b)	0.29 ± 0.08 (bc)	0.17 ± 0.05 (c)	0.21 ± 0.04 (c)	0.0002
MYH1F (1)	1.39 ± 0.24 (a)	0.86 ± 0.15 (ab)	0.60 ± 0.11 (b)	0.47 ± 0.18 (b)	0.56 ± 0.13 (b)	0.02
ANKRD46 (1)	713.6 ± 222.7 (a)	5.72 ± 2.86 (b)	1.86 ± 0.45 (bc)	1.36 ± 0.61 (c)	0.86 ± 0.16 (c)	≤0.0001
MYOCD (1)	1.87 ± 0.13 (a)	0.77 ± 0.19 (b)	0.53 ± 0.06 (b)	0.34 ± 0.03 (c)	0.55 ± 0.09 (bc)	0.0002
TUBB4B (2)	0.57 ± 0.07 (b)	0.85 ± 0.13 (a)	0.93 ± 0.09 (a)	1.15 ± 0.17 (a)	1.03 ± 0.12 (a)	0.01
MYH1B (2)	0.05 ± 0.01 (b)	0.96 ± 0.28 (ab)	0.75 ± 0.17 (a)	0.57 ± 0.16 (a)	1.26 ± 0.18 (a)	≤0.0001
CTGF (4)	0.11 ± 0.03 (d)	0.30 ± 0.05 (c)	0.61 ± 0.16 (bc)	0.86 ± 0.12 (ab)	1.46 ± 0.27 (a)	≤0.0001
FN1 (4)	0.11 ± 0.02 (d)	0.45 ± 0.21 (c)	0.62 ± 0.14 (bc)	1.18 ± 0.25 (ab)	1.74 ± 0.24 (a)	≤0.0001
FASN (5)	0.31 ± 0.03 (c)	0.61 ± 0.12 (b)	0.87 ± 0.14 (ab)	0.91 ± 0.11 (ab)	1.41 ± 0.38 (a)	0.0007
ANTXR1 (5)	1.00 ± 0.14 (b)	0.70 ± 0.22 (b)	0.73 ± 0.19 (b)	0.85 ± 0.18 (b)	2.04 ± 0.48 (a)	0.04
PPARG (5)	0.31 ± 0.03 (c)	0.69 ± 0.23 (bc)	0.70 ± 0.16 (b)	0.60 ± 0.22 (bc)	2.04 ± 0.56 (a)	0.002
COL6A3 (5)	0.39 ± 0.05 (c)	0.71 ± 0.18 (bc)	0.82 ± 0.12 (b)	1.05 ± 0.13 (b)	1.53 ± 0.15 (a)	0.0005
PCNA (6)	1.19 ± 0.13 (c)	0.78 ± 0.12 (bc)	0.79 ± 0.12 (b)	1.01 ± 0.13 (b)	1.30 ± 0.20 (a)	0.05
MyoD	0.84 ± 0.08	0.71 ± 0.09	0.84 ± 0.20	0.82 ± 0.11	0.75 ± 0.11	NS
MYF5	1.25 ± 0.19	1.63 ± 0.34	1.08 ± 0.15	1.53 ± 0.41	1.76 ± 0.38	NS
PITX2	0.67 ± 0.20	0.82 ± 0.17	1.19 ± 0.33	1.65 ± 0.40	1.06 ± 0.17	NS
DAG1	1.05 ± 0.13	0.89 ± 0.13	0.86 ± 0.09	0.80 ± 0.10	1.13 ± 0.40	NS
PNPLA7	1.14 ± 0.12	0.81 ± 0.10	0.74 ± 0.06	0.85 ± 0.07	0.91 ± 0.09	NS
LRSAM	0.75 ± 0.08	0.78 ± 0.10	0.91 ± 0.10	0.95 ± 0.11	1.07 ± 0.14	NS
ADIPOQ	0.84 ± 0.18	0.68 ± 0.10	0.77 ± 0.04	0.62 ± 0.08	0.95 ± 0.27	NS
FBN1	1.12 ± 0.26	0.55 ± 0.12	0.66 ± 0.08	0.64 ± 0.09	1.35 ± 0.55	NS
DYSF	0.99 ± 0.09	0.86 ± 0.06	0.82 ± 0.06	0.76 ± 0.04	0.88 ± 0.10	NS
ANKRD1	0.51 ± 0.11	0.73 ± 0.18	0.68 ± 0.20	0.68 ± 0.17	1.17 ± 0.23	NS

Data are presented as mean ± SEM. Within a line, different letters indicate significant differences between groups (P ≤ 0.05). ¹SG = slow-growing genotype, FG-C = fast-growing genotype macroscopically free of defects, FG-WS = fast-growing genotype affected by White Striping, FG-WB = fast-growing genotype affected by Wooden Breast, FG-WSWB = fast-growing genotype affected by both White Striping and Wooden Breast. ²Absolute mRNA levels of targeted genes were corrected for 18S ribosomal RNA levels to give a relative mRNA level.