Table 5.
Effects of light intensity on serum IL-6, TNF-α and corticosterone concentrations in chicks

Parameters	Liglit intensity (lx)			SEM¹	P-values²
Parameters	20	30	50	SEM¹	P-values²
IL-6 (pg/mL)	42.32^a	28.76^b	19.12^c	3.162	<0.05
TNF-a (pg/mL)	21.82	22.55	21.19	0.962	0.61
Corticosterone (ng/mL)	10.23^a	5.49^b	4.48^b	0.466	<0.05

SEM, standard error of means.
Means in same rows with different superscripts are significantly different (P<0.05).
TNF-α, tumor necrosis factor-α ; IL-6, interleukin-6.