The effects of an organic rearing system and dietary supplementation of an essential oil mixture on performance and meat yield of slow-growing broilers in two seasons

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dc.contributor.authorKucukyilmaz, K.
dc.contributor.authorBozkurt, M.
dc.contributor.authorCinar, M.
dc.contributor.authorCatli, A. U.
dc.contributor.authorBintas, E.
dc.contributor.authorErkek, R.
dc.date.accessioned2019-10-27T22:05:32Z
dc.date.available2019-10-27T22:05:32Z
dc.date.issued2014
dc.departmentEge Üniversitesien_US
dc.description.abstractIn this study, performance and carcass characteristics of slow-growing broiler chicks, reared in organic or conventional systems, and fed a diet with an essential oil mixture (EOM, 48 mg/kg diet), were evaluated in the autumn and spring seasons. The rearing system affected several performance indices, including body weight, feed intake and feed conversion ratio (FCR), but not mortality, within a high statistical significance at 42 and 81 days of age. However, this was observed only from 1 to 42 days in the spring trial. Dietary administration with EOM worsened the FCR at 42 and at 81 days of age in the autumn trial, but not in spring. Organically reared slow-growing chickens consumed less feed mixture per unit of body weight gain, but attained a higher final weight compared with those kept indoors. However, the effect was more pronounced in autumn, which displayed cooler temperatures and robust plant cover availability (i.e. lucerne and trifolium). The carcass yield and cut-up carcass yield were not affected by the rearing system, but EOM diet supplementation increased breast yield only in the spring. The results suggest that autumn conditions promote efficient organic chicken production in the subtropical climatic zone. The amount of herbage consumed represented up to 10% and 3% of the birds' daily protein and ether extract requirements, respectively. Supplementing the diet with a mixture of plant essential oils did not support the hypothesis that phytogenic compounds may favourably affect gut function and poultry performance.en_US
dc.description.sponsorshipTurkish Ministry of Agriculture and Rural AffairsGida Tarim Ve Hayvancilik Bakanligi [TAGEM/HAYSUD/06/12/01/01]en_US
dc.description.sponsorshipThis project was supported by the Turkish Ministry of Agriculture and Rural Affairs, Project No: TAGEM/HAYSUD/06/12/01/01.en_US
dc.identifier.doi10.4314/sajas.v44i.6
dc.identifier.issn0375-1589
dc.identifier.issn0375-1589en_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.4314/sajas.v44i.6
dc.identifier.urihttps://hdl.handle.net/11454/48488
dc.identifier.volume44en_US
dc.identifier.wosWOS:000347625100006en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSouth African Journal Of Animal Sciencesen_US
dc.relation.ispartofSouth African Journal of Animal Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBroileren_US
dc.subjectcarcass characteristicsen_US
dc.subjectessential oilen_US
dc.subjectorganicen_US
dc.subjectperformanceen_US
dc.titleThe effects of an organic rearing system and dietary supplementation of an essential oil mixture on performance and meat yield of slow-growing broilers in two seasonsen_US
dc.typeArticleen_US

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