mRNA expression of apoptosis-related genes in chicken’s erythrocytes at different time intervals (0, 2, 6 and 10 h). Asterisks (*) indicating significant differences among experimental and control groups (*p < 0.05; **p < 0.01; ***p < 0.0004; ****p < 0.0001; ns, not significant) C, control; EXP, experimental.