Fig. 2.

Comparison of serum metabolic indices in Snowy white chickens raised at high and low altitudes. The Fig. illustrates the concentrations of lactic acid (LA) and lactate dehydrogenase (LDH) in the serum of chickens reared under high-altitude and low-altitude conditions. These metabolic markers are indicative of anaerobic respiration activity. Elevated levels reflect increased glycolytic metabolism, commonly associated with hypoxic stress. Data are presented as mean ± standard deviation (SD). Different lowercase letters (a, b) denote statistically significant differences between groups (P < 0.05).