Table 4. Effects of THI on immune and stress responses of finishing pigs

Item	Treatments		SEM	p-value
Temperature (°C)	23–24	32–33
Humidity (%)	35	80
THI1)	68	87
TNF-α (pg/mL)
D0	84.09	85.16	18.37	0.969
D14	93.56	99.70	16.17	0.801
TGF-β1 (pg/mL)
D0	1,220.94	1,180.67	274.67	0.922
D14	1,283.78	1,277.77	145.54	0.978
IL-6 (pg/mL)
D0	142.65	133.02	6.16	0.331
D14	140.02	132.12	5.44	0.362
IL-1β (pg/mL)
D0	43.44	44.00	1.56	0.813
D14	37.67	43.49	3.98	0.360
Cortisol (ng/mL)
D0	32.17	31.07	2.26	0.748
D14	31.88	33.78	1.55	0.435

The data reported represent the means of 12 replicates (5 pigs/pen).
THI = (1.8 × temperature + 32) – [(0.55 – 0.0055 × relative humidity) × (1.8 × temperature – 26.8)].
THI, temperature-humidity index; TNF-α, tumor necrosis factor-α; TGF-β1, transforming growth factor-β1; IL-6, interleukin-6; IL-1β, interleukin-1β.