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dc.contributor.authorBerrocal, M. Muñoz
dc.contributor.authorTonhati, Humberto [UNESP]
dc.contributor.authorBorquis, R. Aspilcueta [UNESP]
dc.contributor.authorHurtado-Lugo, N. [UNESP]
dc.date.accessioned2014-05-27T11:23:39Z
dc.date.available2014-05-27T11:23:39Z
dc.date.issued2008-09-01
dc.identifierhttp://www.lrrd.org/lrrd20/9/berr20142.htm
dc.identifier.citationLivestock Research for Rural Development, v. 20, n. 9, 2008.
dc.identifier.issn0121-3784
dc.identifier.urihttp://hdl.handle.net/11449/70563
dc.description.abstractIn this study the Linear functions: Hyperbolic Linear (HLF), Quadratic logarithmic (FQF), and non-linear functions: Parabolic Exponential (PEF), Incomplete Gama (IGF), and Polinomial Inverse (FPI), were employed with the goal to assess what is the function that best fits the curve of lactation average, using data from milk production from twelve herds of buffalo and their Murrah race cross, and reared under intensive systems with once daily milking. We considered details from 1280 lactations with 8839 measurements of milk production. The milk yield determination was conducted on average every 30 days during the period from 1990 to 2001.The lactations employed containing at least four and a maximum of nine measurements if milk production. The criteria used to verify the quality of the adjustment of each function were: the coefficient of determination adjusted (RA 2), the test Lack of Fit (LOF), the graphic distribution of waste and waste Lag graph. The best ratios were 88.79% for determination FQF followed by the FPI (P> 0.05). All mathematical functions tested underestimated the peak of milk production in Murrah buffaloes, with the quadratic logarithmic function coming closest (adjusted) to peak production.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.language.isospa
dc.relation.ispartofLivestock Research for Rural Development
dc.sourceScopus
dc.subjectBuffaloes
dc.subjectIncomplete gamma
dc.subjectInverse polynomial
dc.subjectLineal hyperbolic
dc.subjectParabolic exponential
dc.subjectQuadratic logarithmic
dc.subjectBubalus
dc.titleUso de modelos lineales y no lineales para el estudio de la curva de lactancia en búfalos Murrah y sus cruces en sistemas de cría extensiva en el estado de São Pauloes
dc.title.alternativeUse of some mathematical models to study the lactation curve of Murrah buffaloes and their crossbreds under extensive system in the state of São Pauloen
dc.typeArtigo
dc.contributor.institutionUniversidad Nacional Agrária de la Selva
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationFacultad de Zootecnia Universidad Nacional Agrária de la Selva, Tingo Maria
dc.description.affiliationFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, Jaboticabal (UNESP), 14884900, SP
dc.description.affiliationBolsista da Fundação de Amparo à Pesquisa do Estado de São Paulo - FAPESP
dc.description.affiliationUnespFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, Jaboticabal (UNESP), 14884900, SP
dc.rights.accessRightsAcesso aberto
dc.identifier.scopus2-s2.0-51149093306
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
dc.identifier.file2-s2.0-51149093306.pdf
dc.identifier.lattes7445254960858159
unesp.author.lattes7445254960858159
dc.relation.ispartofsjr0,266
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