الفهرس 
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Abstract
The study included the preparations of nanoparticles from garlic and rosemary using the aqueous and ethanolic (30%) extracts that were made by reducing mineral ion to form zero valence. The experimental work of the present study was carried out in private farms in Dakranis , Dakahlia Governorate, Egypt from March to April 2018. The objective of the present study was to evaluate the effect of nano herbal plant as a feed supplement on growth performance, carcass yeild, some blood metabolites, immunity, lipid peroxidation and histology in broiler chickens. Cobb 500 broiler chickens (n=196), one-day-old, were divided into seven treatment groups, each of which include four replicates (pens). The birds were divided into two experiments, where the first experiment included four groups, which were assigned to four dietary treatments (0.0 control group, 1.0 g/kg aqueous garlic extract, 0.5 g/kg nano - garlic group and 1.0 g/kg nano garlic - group) with four replications of 7 birds for 42 d. The second experiment also contained four dietary treatments: 0.0 control group, 1.0 g/kg aqueous rosemary extract group, 0.5 g/kg nano - rosemary group and 1.0 g/kg nano - rosemary group. One control group was used for both experiments. The results on the humoral immune response of broiler chickens showed significant increases in immunoglobulins in the supplemented groups (garlic extract, nano- garlic (0.5g/kg) and nano- garlic, (1 g/kg) compared with the control group.