During the LPS challenge, pigs kept at TN had significantly greater
plasma concentrations of cortisol than those kept at HT (107 vs.
90 ng/mL; P < 0.05), but the same pattern of response to LPS administration was observed in both groups (Fig. 1b); i.e. cortisol concentration was greater at LPS1 and then decreased throughout the
treatment period (P < 0.001). Irrespective of Ta, TT4 was lower at LPS1
(P < 0.001; Fig. 1d) then increased, remaining constant thereafter,
and glutathione was higher at LPS3 than at LPS5 (P < 0.01; Table 1 ).