Figure 2

Comparison of stress indexes among the three groups. ★: Compared with the GA group, P < 0.05; ■: Compared with the GE group, P < 0.05; ●: Compared with the GN group, P < 0.05.
Comparison of stress indexes among the three groups. ★: Compared with the GA group, P < 0.05; ■: Compared with the GE group, P < 0.05; ●: Compared with the GN group, P < 0.05.