الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
The present study was carried out at Poultry Production Research
Farm, Poultry Research Unit, Biological Application Department,
Nuclear Research Center, Egyptian Atomic Energy Authority, during the
period from Marsh to May 2017, and the chemical analysis were
conducted in the Biological Applications Department laboratories,
Nuclear Research Center, Egyptian Atomic Energy Authority. A total of
210 broiler breeder eggs (Habbard Star-Bro) were obtained from a local
hatchery (El-Tokhy Co., New Salhia, Egypt) from a maternal flock 54
week age. Eggs were incubated at 37.8ᵒC and 60% RH. Upon arrival, the
eggs were individually weighed and divided into three in ovo treatment
groups. The first treatment non in ovo-injected, and considered the
control group, while the second and the third treatments were in ovo
injected with 100 μL of nano –Selenium(elemental selenium ) with
concentrations of 5, 10 ppm respectively at 14 day of incubation. The
hatched chicks, from each treatment were randomly divided into two
treatments , once was added 10 PPm nano -Se per kilogram ration, and
the other without any additive, it had became six treatments .
Data were collected in terms of live body weight, weight gain, feed
consumption and feed conversion during the experimental period. At the
end of the experiment, three birds from each group were slaughtered,
eviscerated to determine carcass characteristics and blood samples were
collected. At autopsy, representative tissue samples were taken from
pectoral muscle, ileum, liver, cecal tonsils, spleen, thymus and bursa of
Fabricius for histological examination.
The results obtained can be summarized as follows:
1.Hatchability rates were reduced significantly as influenced by
different experimental treatments while body weight at hatch did
not affected.interaction between their, however, Cholesterols and LDL were
not affected by the treatments.
11. Serum reduced glutathione content and glutathione reductase
activity were increased significantly as affected by the two nano-
Se delivery routes and the interaction between there.
12. Malondialdehyde content was decreased significantly as affected
by the two nano-Se delivery routes and the interaction between
there.
13. Serum IgM, IgG, IgA, total Ig and antibody titer against NDV were
increased significantly as affected by feed supplementation nano-
Se and in ovo injection nano-Se, while the interaction between the
two nano-Se supplementation routs did not affected on the
previous parameters.
from the previous results it could be concluded that:
In ovo inoculation selenium nanoparticles at14th day of
embryogenesis or supplementation it as feed additive or both the
two routes together could be used as a good tool for improving
subsequent post hatch productive performance,lipid profile,
antioxidant and Immunological status of broiler chicks.
Based on the present results, it is recommended to use
selenium nanoparticles especially with In ovo doses of 10 or 5ppm
per egg with 10ppm per kilogram ration respectively, in order to
improve productive, physiological and immunological status of
hatched chicks.