Effects of season, genotype, and rearing system on broiler chickens raised in different semi-intensive systems: performance, mortality, and slaughter results

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dc.authorid0000-0002-4586-8618
dc.authorscopusid36160869900
dc.authorscopusid36132784800
dc.authorscopusid36133557400
dc.authorscopusid8720222700
dc.contributor.authorAksoy, Tülin
dc.contributor.authorİlaslan Çürek, Deniz
dc.contributor.authorNarinç, Doğan
dc.contributor.authorÖnenç, Alper
dc.date.accessioned2022-05-11T14:46:43Z
dc.date.available2022-05-11T14:46:43Z
dc.date.issued2021
dc.departmentFakülteler, Ziraat Fakültesi, Zootekni Bölümü
dc.description.abstractThis study aimed to determine the effects of chicken genotype (fast-growing and slow-growing), various semi-intensive production systems (extensive indoor, free-range, and traditional free-range), and season (spring and summer) on animal performance, mortality, growth curve, and slaughter results under semi-environmentally controlled conditions in a subtropical region. Production systems were applied in conformity with the EU standards. While the summer experiment improved performance during brooding (1st-28th days), hot conditions led to a decline in performance during the growing period. In addition, negative effects were determined for all parameters of Gompertz growth curve in summer (P < 0.05, for all). In spring, fast-growing showed 36% higher final live weights than slow-growing, and this difference decreased in summer (16% for extensive indoor and 25% for free-range) (P < 0.05, for all). Fast-growing in extensive indoor and free-range displayed similar weight gains in the growing period, whereas grazing ones consumed less feed (P < 0.05) and thus showed better (P < 0.05) feed conversion. The same situation was true for slow-growing in spring. The mortality was approximately 1% in all groups in spring, while it was 17.36 and 18.06% for fast-growing in extensive indoor and free-range and 1.39, 2.78, and 4.29 for slow-growing in extensive indoor, free-range, and traditional free-range in summer. It is advantageous to choose fast-growing if short-term (56 days) fattening especially under optimum conditions is to be preferred. If the growing period coincides with summer, slow-growing should definitely be preferred and the fattening period should be extended to 82 days. Grazing improved feed conversion (P < 0.05) by reducing cereal-based diet consumption in both genotypes but did not affect carcass yield. However, grazing had a positive effect on fleshing.
dc.description.sponsorshipScientific and Technological Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [105 O 432]
dc.description.sponsorshipThis research was funded by the Scientific and Technological Research Council of Turkey (Project No.: 105 O 432).
dc.identifier.doi10.1007/s11250-021-02629-y
dc.identifier.issn0049-4747
dc.identifier.issn1573-7438
dc.identifier.issue1en_US
dc.identifier.pmid33655371
dc.identifier.scopus2-s2.0-85102032120
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s11250-021-02629-y
dc.identifier.urihttps://hdl.handle.net/20.500.11776/10353
dc.identifier.volume53
dc.identifier.wosWOS:000625352900003
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorÖnenç, Alper
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofTropical Animal Health and Production
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectExtensive indoor
dc.subjectFree-range
dc.subjectTraditional free-range
dc.subjectGompertz
dc.subjectFeed consumption
dc.subjectMeat yield
dc.titleEffects of season, genotype, and rearing system on broiler chickens raised in different semi-intensive systems: performance, mortality, and slaughter results
dc.typeArticle

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