Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1059601
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dc.contributor.authorBIASE, A. G.pt_BR
dc.contributor.authorDIAS, C. T. dos S.pt_BR
dc.contributor.authorBARIONI, L. G.pt_BR
dc.contributor.authorALBERTINI, T. Z.pt_BR
dc.contributor.authorMARTORANO, L. G.pt_BR
dc.contributor.authorOLTJEN, J. W.pt_BR
dc.contributor.authorLANNA, D. P. D.pt_BR
dc.contributor.authorOLIVEIRA, P. P. A.pt_BR
dc.contributor.authorMEDEIROS, S. R. dept_BR
dc.contributor.authorTORRES JUNIOR, R. A. de A.pt_BR
dc.date.accessioned2016-12-29T11:11:11Zpt_BR
dc.date.available2016-12-29T11:11:11Zpt_BR
dc.date.created2016-12-29pt_BR
dc.date.issued2017pt_BR
dc.identifier.citationScientia Agricola, v. 74, n. 1, p.8-17, Jan./Feb. 2017.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1059601pt_BR
dc.descriptionThe system of differential equations proposed by Oltjen et al. [1986, named Davis Growth Model (DGM)] to represent cattle growth has been parameterized with data from Bos taurus (British) and Bos indicus (Nellore) breeds. The DGM has been successfully used for simulation and decision support in the United States. However, the effect of about 30 years of genetic improvement and the use of different breeds may affect the model parameter values, which also may need to be re-estimated for crossbred animals. The aim of this study was to estimate parameter values and confidence intervals for the DGM with growth and body composition data from Zebu crossbred animals. Confidence intervals and asymptotic distribution were generated through nonparametric bootstrap with data from a field experiment conducted in Brazil. The parameters showed normal probability distribution for most scenarios. The rate constant for deoxyribonucleic acid (DNA) synthesis had a minimum increase of 156 % and the maximum of 389 %, compared to the original values and the maintenance requirement had a minimum increase of 126 % and maximum of 160 % compared to the original values. Lower limits of 95 % confidence intervals for the parameters related to maintenance and protein accretion rates were higher than the original estimates of the DGM, evidencing genetic differences of the Zebu crossbred animals in relation to the original DGM parameters.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAsymptotic distributionpt_BR
dc.subjectCalibratingpt_BR
dc.subjectCattle growthpt_BR
dc.subjectNonparametric bootstrappt_BR
dc.subjectOrdinary differential equationspt_BR
dc.titleParametrization of the Davis Growth Model using data of crossbred zebu cattle.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-03-30T11:11:11Zpt_BR
dc.subject.thesagroAgriculturapt_BR
dc.subject.thesagroModelo Matemáticopt_BR
dc.subject.nalthesaurusBeef cattlept_BR
dc.subject.nalthesaurusCattlept_BR
dc.subject.nalthesaurusZebupt_BR
dc.subject.nalthesaurusMathematical modelspt_BR
riaa.ainfo.id1059601pt_BR
riaa.ainfo.lastupdate2017-03-30pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/1678-992X-2015-0284pt_BR
dc.contributor.institutionADRIELE GIARETTA BIASE, Esalq/USP; CARLOS TADEU DOS SANTOS DIAS, Esalq/USP; LUIS GUSTAVO BARIONI, CNPTIA; TIAGO ZANETT ALBERTINI, Esalq/USP; LUCIETA GUERREIRO MARTORANO, CPATU; JAMES W. OLTJEN, University of California; DANTE PAZZANESE DUARTE LANNA, Esalq/USP; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; SERGIO RAPOSO DE MEDEIROS, CNPGC; ROBERTO AUGUSTO DE ALMEIDA TORRES JUNIOR, CNPGC.pt_BR
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