Uso 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 Paulo
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.lrrd.org/lrrd20/9/berr20142.htm http://hdl.handle.net/11449/70563 |
Resumo: | In 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. |
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Uso 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 PauloUse of some mathematical models to study the lactation curve of Murrah buffaloes and their crossbreds under extensive system in the state of São PauloBuffaloesIncomplete gammaInverse polynomialLineal hyperbolicParabolic exponentialQuadratic logarithmicBubalusIn 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.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Facultad de Zootecnia Universidad Nacional Agrária de la Selva, Tingo MariaFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, Jaboticabal (UNESP), 14884900, SPBolsista da Fundação de Amparo à Pesquisa do Estado de São Paulo - FAPESPFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista, Jaboticabal (UNESP), 14884900, SPUniversidad Nacional Agrária de la SelvaUniversidade Estadual Paulista (Unesp)Berrocal, M. MuñozTonhati, Humberto [UNESP]Borquis, R. Aspilcueta [UNESP]Hurtado-Lugo, N. [UNESP]2014-05-27T11:23:39Z2014-05-27T11:23:39Z2008-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://www.lrrd.org/lrrd20/9/berr20142.htmLivestock Research for Rural Development, v. 20, n. 9, 2008.0121-3784http://hdl.handle.net/11449/705632-s2.0-511490933062-s2.0-51149093306.pdf7445254960858159Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPspaLivestock Research for Rural Development0,266info:eu-repo/semantics/openAccess2024-06-07T18:44:57Zoai:repositorio.unesp.br:11449/70563Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:53:24.977315Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Uso 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 Paulo Use of some mathematical models to study the lactation curve of Murrah buffaloes and their crossbreds under extensive system in the state of São Paulo |
title |
Uso 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 Paulo |
spellingShingle |
Uso 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 Paulo Berrocal, M. Muñoz Buffaloes Incomplete gamma Inverse polynomial Lineal hyperbolic Parabolic exponential Quadratic logarithmic Bubalus |
title_short |
Uso 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 Paulo |
title_full |
Uso 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 Paulo |
title_fullStr |
Uso 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 Paulo |
title_full_unstemmed |
Uso 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 Paulo |
title_sort |
Uso 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 Paulo |
author |
Berrocal, M. Muñoz |
author_facet |
Berrocal, M. Muñoz Tonhati, Humberto [UNESP] Borquis, R. Aspilcueta [UNESP] Hurtado-Lugo, N. [UNESP] |
author_role |
author |
author2 |
Tonhati, Humberto [UNESP] Borquis, R. Aspilcueta [UNESP] Hurtado-Lugo, N. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidad Nacional Agrária de la Selva Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Berrocal, M. Muñoz Tonhati, Humberto [UNESP] Borquis, R. Aspilcueta [UNESP] Hurtado-Lugo, N. [UNESP] |
dc.subject.por.fl_str_mv |
Buffaloes Incomplete gamma Inverse polynomial Lineal hyperbolic Parabolic exponential Quadratic logarithmic Bubalus |
topic |
Buffaloes Incomplete gamma Inverse polynomial Lineal hyperbolic Parabolic exponential Quadratic logarithmic Bubalus |
description |
In 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. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-09-01 2014-05-27T11:23:39Z 2014-05-27T11:23:39Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.lrrd.org/lrrd20/9/berr20142.htm Livestock Research for Rural Development, v. 20, n. 9, 2008. 0121-3784 http://hdl.handle.net/11449/70563 2-s2.0-51149093306 2-s2.0-51149093306.pdf 7445254960858159 |
url |
http://www.lrrd.org/lrrd20/9/berr20142.htm http://hdl.handle.net/11449/70563 |
identifier_str_mv |
Livestock Research for Rural Development, v. 20, n. 9, 2008. 0121-3784 2-s2.0-51149093306 2-s2.0-51149093306.pdf 7445254960858159 |
dc.language.iso.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
Livestock Research for Rural Development 0,266 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808129562161184768 |