Table 3 Transcript levels of genes encoding fiber-specific MHC isoforms and regulators of muscle fiber distribution in LD muscle of pigs fed either a control diet or a diet supplemented with 750 mg niacin/kg diet for 3 wk
Control | Niacin | Pvalue | |
|---|---|---|---|
n = 12 | n = 13 | (ANOVA) | |
Relative mRNA level (fold of control) | |||
Fiber-specific MHC isoforms | |||
MYH7 (type I-specific) | 1.00 ± 0.29 | 1.26 ± 0.42 | 0.139 |
MYH2 (type IIA-specific) | 1.00 ± 0.40 | 0.65 ± 0.21 | 0.023 |
MYH4 (type IIB-specific) | 1.00 ± 0.51 | 0.67 ± 0.27 | 0.086 |
Regulators of fiber distribution | |||
PGC-1α | 1.00 ± 0.91 | 1.49 ± 0.98 | 0.309 |
PGC-1β | 1.00 ± 0.24 | 1.33 ± 0.31 | 0.021 |