Fig. 1

Differences in growth performance between high and low body weight chickens from three different breeds (Turpan cockfighting × White Leghorn chickens, white feather chickens, and yellow feather chickens). All chickens from three different breeds (Turpan cockfighting × White Leghorn chickens, white feather chickens, and yellow feather chickens) were grown for 6 weeks. A The comparison of body weight, leg muscle weight, and breast muscle weight between high and low body weight chickens. B The comparison of the single leg and breast muscle cell’s cross-sectional area between high and low body weight chickens (H & E staining). Scale bars, 100 μm. Data are shown as mean ± SEM. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001. H, high body weight group (n = 10); L, low body weight group (n = 10)