Fig. 2

Relative mRNA expression of genes coding for myokines (IL-6, IL-15), myogenic regulatory factors (MyoD, MyoG), and ubiquitin ligases (MuRF1, MAFbx) in the skeletal muscle of different locations of growing-finishing pigs fed the restricted protein diets. β-actin was used as an internal standard to normalize the signal control. Data are expressed as means ± SE (n = 6). Bars with different letters are significantly different at P < 0.05. IL-6 = interleukin-6; IL-15 = interleukin-15; MyoD = myoblast determination protein; MyoG = myogenin; MuRF1 = muscle ring finger 1; MAFbx = muscle atrophy F-box; AP = adequate protein; MP = moderately restricted protein; LP = low protein