Effects of breeder age and egg weight on morphological changes in the small intestine of chicks during the hatch window

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dc.contributor.authorYalcin, S.
dc.contributor.authorIzzetoglu, G. T.
dc.contributor.authorAktas, A.
dc.date.accessioned2019-10-27T22:06:42Z
dc.date.available2019-10-27T22:06:42Z
dc.date.issued2013
dc.departmentEge Üniversitesien_US
dc.description.abstract1. The objective of the study was to investigate the effects of breeder age and egg weight on hatching performance and morphological changes in segments of the small intestine of broiler chicks during a 21 h hatch window.2. Eggs from Ross broiler breeder flocks aged 29 (young) and 48 weeks (old) were classified as light (LE) or heavy (HE) and incubated at the same conditions. At 475h of incubation, eggs were checked every 3h to determine time of external pipping and hatching. The first 42 chicks to emerge from each group were weighed and chick length was measured and 14 chicks from each group were sampled to collect residual yolk and intestine segments. The rest of chicks were placed back in the incubator and chick weight and length were measured individually at 9, 15 and 21h after chicks hatched. At the end of 21h, 14 chicks from each group were sampled again and the same procedure was followed.3. The HE chicks pipped and hatched later than LE, regardless of breeder age. From hatch to the end of the hatch window, chick weight, but not yolk-free chick weight, gradually reduced. Relative residual yolk weight of chicks from both egg weights was similar at hatch, however, yolk sac utilisation was higher for LE chicks during the 21 h post-hatch period. At hatch, jejunum and ileum villus development was very similar for HE and LE chicks but greater development was observed for villus area with an increase in the jejunum villus length, width and goblet cell numbers in HE chicks.4. The longest jejunum villus and the widest duodenum and jejunum villus were obtained for HE chicks from old breeders indicating that HE chicks from old breeders would have a greater surface area for nutrient absorption.en_US
dc.identifier.doi10.1080/00071668.2013.860212en_US
dc.identifier.endpage817en_US
dc.identifier.issn0007-1668
dc.identifier.issn1466-1799
dc.identifier.issue6en_US
dc.identifier.pmid24256463en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage810en_US
dc.identifier.urihttps://doi.org/10.1080/00071668.2013.860212
dc.identifier.urihttps://hdl.handle.net/11454/48866
dc.identifier.volume54en_US
dc.identifier.wosWOS:000329688900015en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofBritish Poultry Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleEffects of breeder age and egg weight on morphological changes in the small intestine of chicks during the hatch windowen_US
dc.typeArticleen_US

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