Comparison of growth curve models on average and individual body weights in chickens

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dc.contributor.authorAtil, Hulya
dc.contributor.authorGrossman, M.
dc.contributor.authorTakma, Cigdem
dc.date.accessioned2019-10-27T19:36:22Z
dc.date.available2019-10-27T19:36:22Z
dc.date.issued2007
dc.departmentEge Üniversitesien_US
dc.description.abstractGrowth curves for average body weights of broilers were compared with growth curves for individuals using three models: Bertalanffy, Gompertz, and Logistic. A total of 141 males and females from two commercial lines were studied: 24 females and 32 males from line 1, and 64 females and 21 males from Line 2. individual body weights were recorded weekly, from hatching through 6 weeks of age. Coefficients of determination, residual standard errors and Durbin-Watson statistics were used to determine goodness of fit. Log-Logistic gave the best fit of the three growth models. When fitting the Log-Logistic, the residual standard error, Durbin Watson statistics and estimates of the parameter for mature weight were generally higher for curves of individual weights than for curves of average weights. Estimates for age at the inflection point were the same for average of individual weights and average weights. Average growth curves can be useful to demonstrate the growth model and to make general interpretations, but individual growth curves are necessary to examine individual differences.en_US
dc.identifier.endpage5en_US
dc.identifier.issn0003-9098
dc.identifier.issn0003-9098en_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage1en_US
dc.identifier.urihttps://hdl.handle.net/11454/39847
dc.identifier.volume71en_US
dc.identifier.wosWOS:000245530600001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherEugen Ulmer Gmbh Coen_US
dc.relation.ispartofArchiv Fur Geflugelkundeen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectbroileren_US
dc.subjectBertalanffyen_US
dc.subjectGompertzen_US
dc.subjectlogisticen_US
dc.subjectgrowth curveen_US
dc.titleComparison of growth curve models on average and individual body weights in chickensen_US
dc.typeArticleen_US

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