Table 6.

Effect of EOs with black pepper oil or radish seeds oil on serum immune parameters in broiler chickens.

	Experimental Groups
Parameters	NC	EOs	EOs + BPO0.25	EOs + BPO0.5	EOs + RSO0.25	EOs + RSO0.5	SEM	p-Value
Lysozymes (μ/mL)	0.79 d	0.81 d	0.86 b	1.00 a	0.83 c	0.87 b	0.01	<0.001
IgM (mg/dL)	13.26 d	14.16 c	16.11 b	18.10 a	14.44 c	16.27 b	0.31	<0.001
IgG (mg/dL)	1.68 d	1.84 c	2.04 b	2.40 a	1.84 c	2.06 b	0.05	<0.001
Phagocytic, %	61.28 d	63.86 c	68.56 b	83.46 a	64.68 c	68.88 b	1.37	<0.001

IgM: immunoglobulins M; IgG: immunoglobulins G. EOs mixture of mint, parsley, and carrot oils. EOs: birds fed a basal diet supplemented with 1.5 g/kg EOs; EOs + BPO0.25: birds fed a basal diet supplemented with 1.5 g/kg EOs plus 0.25 g/kg black pepper oil (BPO); EOs + BPO0.5: birds fed a basal diet supplemented with 1.5 g/kg EOs plus 0.25 g/kg black pepper oil (BPO); EOs + RSO0.25: birds fed a basal diet supplemented with 1.5 g/kg EOs plus 0.25 g/kg radish seed oil (RSO); EOs + RSO0.5: birds fed a basal diet supplemented with 1.5 g/kg EOs plus 0.5 g/kg radish seed oil (RSO). SEM: standard error of the mean; ^abcd means with different superscripts within the same row differ significantly (p < 0.05).