Effect of Copper Supplementation on Performance, Eggshell Quality and Heterophil: Lymphocyte Ratio in Aged Laying Hens Housed at Different Stocking Densities

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dc.contributor.authorOlgun, O.
dc.contributor.authorAygun, A.
dc.date.accessioned2020-03-26T19:35:04Z
dc.date.available2020-03-26T19:35:04Z
dc.date.issued2017
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThis study was conducted to determine the effects of additional dietary copper on performance, eggshell quality and heterophil: lymphocyte ratio in aged laying hens housed at different stocking densities. For this purpose, 216 Nick Chick laying hens of 106 weeks of age, were housed at three different stocking densities i.e. 500, 417 and 357 cm(2)/hen, respectively and copper (0, 150 and 300 mg/kg) was added in the basal diet for a period of 10 weeks using a 3x3 factorial arrangement. The effect of the treatments on body weight gain, feed intake, damaged eggs, specific gravity and eggshell breaking strength were not significant (P>0.05). However, eggshell thickness was improved (P<0.05) with increasing stocking density in the aged laying hens. Additionally, added copper had a significant effect on egg production (P<0.05), egg weight (P<0.01), egg mass (P<0.01), feed conversion ratio (P<0.01) and eggshell weight (P<0.01). While added copper had a significant adverse effect on eggshell weight, the addition of copper had a significant positive effect on performance parameters. Highest stocking density resulted in increased (P<0.05) heterophil: lymphocyte ratio. Addition of 150 and 300 mg/kg copper in the diet of the birds kept at 500 cm(2)/hen stocking density reduced heterophil: lymphocyte ratio as compared to other groups. It may be concluded that supplementation copper in the diet of aged laying hens decreased stress under normal stocking density, while stress was increased to the birds under high stocking density.en_US
dc.identifier.doi10.5958/0974-181X.2017.00003.8en_US
dc.identifier.endpage33en_US
dc.identifier.issn0972-2963en_US
dc.identifier.issn0974-181Xen_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage25en_US
dc.identifier.urihttps://dx.doi.org/10.5958/0974-181X.2017.00003.8
dc.identifier.urihttps://hdl.handle.net/20.500.12395/34996
dc.identifier.volume17en_US
dc.identifier.wosWOS:000408330900003en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherANIMAL NUTRITION ASSOCen_US
dc.relation.ispartofANIMAL NUTRITION AND FEED TECHNOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectCopperen_US
dc.subjectEggshell qualityen_US
dc.subjectHeterophil: lymphocyte ratioen_US
dc.subjectStocking densityen_US
dc.subjectStressen_US
dc.titleEffect of Copper Supplementation on Performance, Eggshell Quality and Heterophil: Lymphocyte Ratio in Aged Laying Hens Housed at Different Stocking Densitiesen_US
dc.typeArticleen_US

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