Fig. 2
Spearman correlations between salivary oxidative stress parameters, salivary cortisol, and sow nursing behaviour. Data for salivary oxidative stress parameters were obtained from our previous study [13]. *P < 0.10, **P < 0.05, ***P < 0.01. Abbreviations: H2O2, Hydrogen peroxide; TEAC, Trolox equivalent antioxidant capacity; TNF-α, Tumour necrosis factor- α