Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei

Detalhes bibliográficos
Autor(a) principal: Bezerra, Ady Marinho
Data de Publicação: 2007
Outros Autores: Silva, José Antônio Aleixo da, Mendes, Paulo de Paula
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/7579
Resumo: The objective of this work was to select management variables of the marine shrimp Litopenaeus vannamei that most influenced culture variable responses (production, productivity, final weight and survival rate), in mathematical models. The database was composed of 83 cultures in the period of 2003 to 2005, obtained from a shrimp farm located in the South coast of Pernambuco. To estimate the parameters of the models it was used the technique of least square. The selection of variable was carried through the backward elimination process associated to the Box and Cox transformation. The adequacy of the equations and the hypothesis of normality and homogeneous variance for the errors were analyzed based on the analysis of variance and on the analysis of residuals. It is possible to correlate those variables and to establish predictions with the equations.
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spelling Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannameiSeleção de variáveis em modelos matemáticos dos parâmetros de cultivo do camarão marinho Litopenaeus vannameirearing; regression; Box; Cox; stepwisecriação; regressão; Box; Cox; stepwiseThe objective of this work was to select management variables of the marine shrimp Litopenaeus vannamei that most influenced culture variable responses (production, productivity, final weight and survival rate), in mathematical models. The database was composed of 83 cultures in the period of 2003 to 2005, obtained from a shrimp farm located in the South coast of Pernambuco. To estimate the parameters of the models it was used the technique of least square. The selection of variable was carried through the backward elimination process associated to the Box and Cox transformation. The adequacy of the equations and the hypothesis of normality and homogeneous variance for the errors were analyzed based on the analysis of variance and on the analysis of residuals. It is possible to correlate those variables and to establish predictions with the equations.O objetivo deste trabalho foi selecionar as variáveis de manejo do camarão marinho Litopenaeus vannamei que mais influenciaram nas variáveis-respostas ao cultivo (produção, produtividade, peso final e taxa de sobrevivência), em modelos matemáticos. O banco de dados foi composto por 83 cultivos, realizados no período de 2003 a 2005, obtidos de uma fazenda comercial localizada no litoral sul de Pernambuco. Para estimar os parâmetros dos modelos, utilizou-se a técnica dos mínimos quadrados. A seleção das variáveis foi realizada com o processo "backward elimination" associado ao método de transformação de Box e Cox. A adequação das equações e os pressupostos de normalidade e homocedasticidade, para os erros, foram analisadas com base na análise de variância e análise de resíduo. É possível relacionar essas variáveis e estabelecer predições com as equações.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraBezerra, Ady MarinhoSilva, José Antônio Aleixo daMendes, Paulo de Paula2007-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/7579Pesquisa Agropecuaria Brasileira; v.42, n.3, mar. 2007; 385-391Pesquisa Agropecuária Brasileira; v.42, n.3, mar. 2007; 385-3911678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/7579/4498info:eu-repo/semantics/openAccess2010-09-20T14:35:52Zoai:ojs.seer.sct.embrapa.br:article/7579Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-09-20T14:35:52Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
Seleção de variáveis em modelos matemáticos dos parâmetros de cultivo do camarão marinho Litopenaeus vannamei
title Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
spellingShingle Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
Bezerra, Ady Marinho
rearing; regression; Box; Cox; stepwise
criação; regressão; Box; Cox; stepwise
title_short Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
title_full Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
title_fullStr Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
title_full_unstemmed Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
title_sort Selection of variables in mathematical models of culture parameters of marine shrimp Litopenaeus vannamei
author Bezerra, Ady Marinho
author_facet Bezerra, Ady Marinho
Silva, José Antônio Aleixo da
Mendes, Paulo de Paula
author_role author
author2 Silva, José Antônio Aleixo da
Mendes, Paulo de Paula
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Bezerra, Ady Marinho
Silva, José Antônio Aleixo da
Mendes, Paulo de Paula
dc.subject.por.fl_str_mv rearing; regression; Box; Cox; stepwise
criação; regressão; Box; Cox; stepwise
topic rearing; regression; Box; Cox; stepwise
criação; regressão; Box; Cox; stepwise
description The objective of this work was to select management variables of the marine shrimp Litopenaeus vannamei that most influenced culture variable responses (production, productivity, final weight and survival rate), in mathematical models. The database was composed of 83 cultures in the period of 2003 to 2005, obtained from a shrimp farm located in the South coast of Pernambuco. To estimate the parameters of the models it was used the technique of least square. The selection of variable was carried through the backward elimination process associated to the Box and Cox transformation. The adequacy of the equations and the hypothesis of normality and homogeneous variance for the errors were analyzed based on the analysis of variance and on the analysis of residuals. It is possible to correlate those variables and to establish predictions with the equations.
publishDate 2007
dc.date.none.fl_str_mv 2007-03-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/7579
url https://seer.sct.embrapa.br/index.php/pab/article/view/7579
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/7579/4498
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.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.42, n.3, mar. 2007; 385-391
Pesquisa Agropecuária Brasileira; v.42, n.3, mar. 2007; 385-391
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
_version_ 1793416668205023232

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