Effects of Dietary Levels of Vitamin a on the Egg Yield and Immune Responses of Laying Hens

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dc.contributor.authorCoşkun, B.
dc.contributor.authorİnal, F.
dc.contributor.authorÇelik, İ.
dc.contributor.authorErganiş, O.
dc.contributor.authorTiftik, A. M.
dc.contributor.authorKurtoğlu, F.
dc.contributor.authorKuyucuoğlu, Y.
dc.date.accessioned2020-03-26T16:26:08Z
dc.date.available2020-03-26T16:26:08Z
dc.date.issued1998
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThis research, which was designed and carried out as two consecutive experiments, investigated the effects of four different levels (0, 4,000, 12,000, and 24,000 IU/kg) of vitamin A supplementation on egg yield, plasma vitamin A levels, and immune responses of laying hens. Transmission of maternal immunity to their descendants was also studied. In the first experiment, egg yield, blood vitamin A levels, and various parameters of the immune system such as T lymphocyte levels in the peripheral blood, plasma cell counts in the spleen, and antibody titers against Newcastle Disease Virus (NDV) in the sera were investigated for a l-yr period. A total of 864 Hisex-brown laying hens were used in this experiment. The chicks were reared as commercial flocks until the 18th wk of age. No significant differences occurred among the parameters of the different diet groups. In the second experiment, maternal immunity was assessed in the chickens, supplied by hatching the eggs from hens in the first experiment. Maternal immunity was assayed by using the parameters as in Experiment 1. For this purpose, both blood and tissue samples were taken on the 2nd, 7th, and 10th d posthatch. Vitamin A supplementation had no significant effects on maternally, derived antibody titers or histologic structure of the lymphoid organs.en_US
dc.identifier.citationCoşkun, B., İnal, F., Çelik, İ, Erganiş, O., Tiftik, A. M., Kurtoğlu, F., Kuyucuoğlu, Y., (1998). Effects of Dietary Levels of Vitamin A on the Egg Yield and Immune Responses of Laying Hens. Poultry Science, 77(4), 542-546. doi: 10.1093/ps/77.4.542
dc.identifier.doi10.1093/ps/77.4.542en_US
dc.identifier.endpage546en_US
dc.identifier.issn0032-5791en_US
dc.identifier.issue4en_US
dc.identifier.pmid9565236en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage542en_US
dc.identifier.urihttps://dx.doi.org/10.1093/ps/77.4.542
dc.identifier.urihttps://hdl.handle.net/20.500.12395/16759
dc.identifier.volume77en_US
dc.identifier.wosWOS:000072940700008en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorCoşkun, B.
dc.institutionauthorİnal, F.
dc.institutionauthorÇelik, İ.
dc.institutionauthorErganiş, O.
dc.institutionauthorTiftik, A. M.
dc.institutionauthorKurtoğlu, F.
dc.institutionauthorKuyucuoğlu, Y.
dc.language.isoenen_US
dc.publisherPOULTRY SCIENCE ASSOC INCen_US
dc.relation.ispartofPoultry Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectvitamin Aen_US
dc.subjectimmunityen_US
dc.subjectegg yieldsen_US
dc.subjectantibody titersen_US
dc.subjectT lymphocytesen_US
dc.titleEffects of Dietary Levels of Vitamin a on the Egg Yield and Immune Responses of Laying Hensen_US
dc.typeArticleen_US

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