Fig. 6
A correlogram showing association among metabolic functions, growth performance parameters, and carcass weight variables across all treatments in broilers at d 42 post-hatch. The spearman’s rho (ρ) correlation coefficient is denoted by the color of the heatmap, and the values are represented in the legend, where the blue color denotes negative correlation while the brown color denotes positive correlation. The asterisk in the cell represents a statistically significant correlation (*P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001), and the rectangles with a black border indicate clustering of the parameters. The percentage (%) organ weight denotes the relative organ weight (g/100 g live weight). ADFI: average daily feed intake, ADG: average daily gain, FCR: feed conversion ratio. Live weight = Total body weight at d 42