Fig. 4

Effect of a low-protein diet supplemented with rumen-protected methionine and lysine on the m⁶A RNA methylation and SAH levels in liver and muscle. On each side of the gray line is a kernel density estimation to illustrate the distribution of shape of the data in a group. Wider and skinnier sections of the violin plot represent a higher and lower probability. The white dot represents the mean and the thick red bar in the center represents the interquartile range. * = significantly different means (P < 0.05). NP, adequate protein diet (n = 7); LP, low-protein diet (n = 6); LP + RML, low-protein diet supplemented with rumen-protected methionine and lysine (n = 7)