Fig. 2From: Transcriptome analysis reveals a molecular understanding of nicotinamide and butyrate sodium on meat quality of broilers under high stocking densityThe pH values of breast muscle. Data are shown as the means ± SEM. Different letters a, b indicate that there are significant differences (P < 0.05) among these groups. L, low stocking density (14 birds/m2); H, high stocking density (18 birds/m2); COMB, combination of NAM and BA (18 birds/m2)Back to article page