Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471

Detalhes bibliográficos
Autor(a) principal: Medri, Vandir
Data de Publicação: 2008
Outros Autores: Pereira, Geni Varéa, Leonhardt, Júlio Hermann
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta Scientiarum Biological Sciences
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4471
Resumo: Two hundred and forty Nile tilapia fry (Oreochromis niloticus), 45 days old, sexually reverted, with initial average weight of 1.25 ± 0.14g, distributed in a totally randomized design during 180 days, were used in this experiment. Effects of substitutions of 10%, 20% and 30% of the rations by yeast obtained from alcohol distillery were evaluated. Average results obtained for the limnological parameters in water quality control by means of chemical analyses and control graphs were considered normal during the entire experimental period. Values of monthly average temperature were statistically out of control and by the application of the capacity rates (Cp and Cpk) showed that 35.20% were below the lowest specification limit (LSL). By means of Pareto’s techniques and knapsack problem used, results presented the best solution for problems of predators, biometry and diseases with the maximized function Z* objective. Quality control techniques have made possible an increase of stocking rate in the tanks without a reduction of the individual growth rate and with high productions of good quality fish.
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spelling Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471Técnicas de controle de qualidade utilizadas na criação de tilápia do Nilo (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471gráfico de controleíndice de capacidadeleveduramochilaParetoqualidade2.00.00.00-6 Ciências BiológicasTwo hundred and forty Nile tilapia fry (Oreochromis niloticus), 45 days old, sexually reverted, with initial average weight of 1.25 ± 0.14g, distributed in a totally randomized design during 180 days, were used in this experiment. Effects of substitutions of 10%, 20% and 30% of the rations by yeast obtained from alcohol distillery were evaluated. Average results obtained for the limnological parameters in water quality control by means of chemical analyses and control graphs were considered normal during the entire experimental period. Values of monthly average temperature were statistically out of control and by the application of the capacity rates (Cp and Cpk) showed that 35.20% were below the lowest specification limit (LSL). By means of Pareto’s techniques and knapsack problem used, results presented the best solution for problems of predators, biometry and diseases with the maximized function Z* objective. Quality control techniques have made possible an increase of stocking rate in the tanks without a reduction of the individual growth rate and with high productions of good quality fish.Foram utilizados 240 alevinos de tilápia do Nilo (Oreochromis niloticus), de 45 dias, sexualmente revertidos com peso médio inicial de 1,25 ± 0,14g, distribuídos num delineamento inteiramente casualizado, durante 180 dias. Foram avaliados os efeitos da substituição de 10%, 20% e 30% da ração por levedura de destilaria alcooleira. Os resultados médios obtidos para os parâmetros limnológicos no controle da qualidade da água através de análises físico-químicas e gráficos de controle foram normais durante todo o período experimental. Os valores da temperatura média mensal revelaram estar “fora de controle estatístico”, e mostraram, através da aplicação dos índices de capacidade (Cp e Cpk), que 35,20% estão abaixo do limite inferior de especificação (LIE). A análise dos resultados obtidos, através da aplicação das técnicas de Pareto e Problema da Mochila, evidenciou a solução ótima para resolver os problemas de predadores, biometrias e doenças com a função objetivo Z* maximizada. A utilização das técnicas de controle de qualidade permite um aumento da taxa de estocagem nos tanques sem redução da taxa de crescimento individual e com obtenção de altas produções de peixes de boa qualidade.Universidade Estadual De Maringá2008-07-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/447110.4025/actascibiolsci.v20i0.4471Acta Scientiarum. Biological Sciences; Vol 20 (1998); 185-190Acta Scientiarum. Biological Sciences; v. 20 (1998); 185-1901807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4471/3055Medri, VandirPereira, Geni VaréaLeonhardt, Júlio Hermanninfo:eu-repo/semantics/openAccess2022-11-23T17:33:41Zoai:periodicos.uem.br/ojs:article/4471Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:41Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
Técnicas de controle de qualidade utilizadas na criação de tilápia do Nilo (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
title Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
spellingShingle Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
Medri, Vandir
gráfico de controle
índice de capacidade
levedura
mochila
Pareto
qualidade
2.00.00.00-6 Ciências Biológicas
title_short Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
title_full Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
title_fullStr Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
title_full_unstemmed Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
title_sort Quality control techniques used in the breeding of Nile tilapia (Oreochromis niloticus) - DOI: 10.4025/actascibiolsci.v20i0.4471
author Medri, Vandir
author_facet Medri, Vandir
Pereira, Geni Varéa
Leonhardt, Júlio Hermann
author_role author
author2 Pereira, Geni Varéa
Leonhardt, Júlio Hermann
author2_role author
author
dc.contributor.author.fl_str_mv Medri, Vandir
Pereira, Geni Varéa
Leonhardt, Júlio Hermann
dc.subject.por.fl_str_mv gráfico de controle
índice de capacidade
levedura
mochila
Pareto
qualidade
2.00.00.00-6 Ciências Biológicas
topic gráfico de controle
índice de capacidade
levedura
mochila
Pareto
qualidade
2.00.00.00-6 Ciências Biológicas
description Two hundred and forty Nile tilapia fry (Oreochromis niloticus), 45 days old, sexually reverted, with initial average weight of 1.25 ± 0.14g, distributed in a totally randomized design during 180 days, were used in this experiment. Effects of substitutions of 10%, 20% and 30% of the rations by yeast obtained from alcohol distillery were evaluated. Average results obtained for the limnological parameters in water quality control by means of chemical analyses and control graphs were considered normal during the entire experimental period. Values of monthly average temperature were statistically out of control and by the application of the capacity rates (Cp and Cpk) showed that 35.20% were below the lowest specification limit (LSL). By means of Pareto’s techniques and knapsack problem used, results presented the best solution for problems of predators, biometry and diseases with the maximized function Z* objective. Quality control techniques have made possible an increase of stocking rate in the tanks without a reduction of the individual growth rate and with high productions of good quality fish.
publishDate 2008
dc.date.none.fl_str_mv 2008-07-21
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 http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4471
10.4025/actascibiolsci.v20i0.4471
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4471
identifier_str_mv 10.4025/actascibiolsci.v20i0.4471
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4471/3055
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 Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Biological Sciences; Vol 20 (1998); 185-190
Acta Scientiarum. Biological Sciences; v. 20 (1998); 185-190
1807-863X
1679-9283
reponame:Acta Scientiarum Biological Sciences
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta Scientiarum Biological Sciences
collection Acta Scientiarum Biological Sciences
repository.name.fl_str_mv Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actabiol@uem.br
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