Effects of garlic and lemon essential oils on performance, digestibility, plasma metabolite, and intestinal health in broilers under environmental heat stress

Table 4 Effect of dietary supplementation of essential oils on the immune organ weight (%) and humoral immunity of broilers at 35 days of age

	CON	GEO	LEO	GLO	SEM	P- value
Immune organs
Spleen	1.16	1.20	1.19	1.13	0.172	0.133
Thymus	3.04	3.27	3.35	3.19	0.091	0.107
Bursa of Fabricius	2.51^c	3.11^b	3.60^a	3.47^ab	0.070	0.001
Humoral immune
NDV	5.07^c	5.53^b	5.41^b	5.84^a	0.161	0.020
AIV	2.81	2.95	3.03	2.98	0.118	0.095

Different superscript letters in the same row indicate significant differences (p < .05)
CON Control group, GEO Garlic essential oil group, LEO Lemon essential oil group, GLO Garlic with lemon essential oil group, NDV Newcastle disease virus, AIV Avian influenza virus (H9N1)

ISSN: 1746-6148