Table 7.

Effects of heat stress on serum immune indicators in Holstein cows.

Items	Groups						SEM
	C-N	C-HS	H-N	H-HS	Dc-N	Dc-HS
IL-1β, pg/mL	154.82	183.36	134.14	164.16	174.86	202.30	2.95
IL-6, pg/mL	221.10	250.27	204.89	233.15	238.88	265.38	2.33
IL-2, pg/mL	16.05	22.07	14.08	20.02	18.08	24.01	0.19
IL-4, pg/mL	455.22	416.38	475.17	433.17	436.10	394.62	6.31
IL-10, pg/mL	407.78	363.02	428.70	382.88	385.75	344.63	5.83
TNF-α, ng/L	128.27	155.51	115.36	141.05	140.40	165.00	2.45
IFN-γ, pg/mL	540.59	699.57	492.92	662.53	601.00	760.41	11.5
IgA, μg/mL	27.57	19.04	30.53	22.14	24.50	16.19	0.26
IgG, μg/mL	262.03	235.66	271.51	245.54	248.34	222.17	3.92
IgM, μg/mL	21.97	17.18	24.06	19.04	20.02	15.08	0.34
HSP70, ng/mL	10.34	8.27	11.68	9.43	9.05	6.86	0.13