The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.aquaculture.2016.06.031 http://hdl.handle.net/11449/168767 |
Resumo: | In land-based pond cultures, periphyton is considered to be a complementary food source for cultured fish. In cage aquaculture, studies on the use of periphyton are scarce and do not support the viability of periphyton-based cage culture. The aim of this study was to evaluate the potential of periphyton-based cage culture of Nile tilapia in a hydroelectric reservoir in Brazil at three stocking densities and two feeding regimes. Sex-reversed male Nile tilapia Oreochromis niloticus (46.56 ± 2.53 g) were placed in 21 cages (6 m3 - 2 × 2 × 1.5 m each) with or without bamboo substrates for periphyton growth. A completely randomized design with three replicates per treatment was used to test the effect of substrate inclusion in the three stocking densities (80, 60, 40 kg of fish/m3) associated with two feeding regimes (100% and 50% of daily ration). Three cages without bamboo substrates were included in the experimental design as control group (CTRL) (80 kg/m3 and 100% of daily ration). The study demonstrates the efficiency of using substrates for Nile tilapia in cages in the reservoir. The presence of bamboo substrates improved the weight gain of fish but reduced the carrying capacity of the cage at the highest density. The concentration of dissolved oxygen in the cages was improved by the presence of substrate between 50 and 140 days of the trial and reduced after 155 days of culture. The inclusion of bamboo substrates inside the cages allows producing up to 52 kg/m3 of Nile tilapia using 32% less diet in a period almost 20% shorter than in the CTRL group. If farmers prefer to produce 80 kg/m3, they can use 30% less diet but the production period would be 20% longer. Statement of relevance: This study has high relevance to the general field of commercial aquaculture because the experiment was carried out at a commercial fish farm, under real environmental conditions and management. Presented results are promising because show that bamboo substrates in cages improve the efficiency of the system up to 52 kg/m3. This production model may be an efficient alternative for family farmers. |
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The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoirBamboo substrateFeed restrictionGrowth performanceMonogeneanStocking densityTrichodinaIn land-based pond cultures, periphyton is considered to be a complementary food source for cultured fish. In cage aquaculture, studies on the use of periphyton are scarce and do not support the viability of periphyton-based cage culture. The aim of this study was to evaluate the potential of periphyton-based cage culture of Nile tilapia in a hydroelectric reservoir in Brazil at three stocking densities and two feeding regimes. Sex-reversed male Nile tilapia Oreochromis niloticus (46.56 ± 2.53 g) were placed in 21 cages (6 m3 - 2 × 2 × 1.5 m each) with or without bamboo substrates for periphyton growth. A completely randomized design with three replicates per treatment was used to test the effect of substrate inclusion in the three stocking densities (80, 60, 40 kg of fish/m3) associated with two feeding regimes (100% and 50% of daily ration). Three cages without bamboo substrates were included in the experimental design as control group (CTRL) (80 kg/m3 and 100% of daily ration). The study demonstrates the efficiency of using substrates for Nile tilapia in cages in the reservoir. The presence of bamboo substrates improved the weight gain of fish but reduced the carrying capacity of the cage at the highest density. The concentration of dissolved oxygen in the cages was improved by the presence of substrate between 50 and 140 days of the trial and reduced after 155 days of culture. The inclusion of bamboo substrates inside the cages allows producing up to 52 kg/m3 of Nile tilapia using 32% less diet in a period almost 20% shorter than in the CTRL group. If farmers prefer to produce 80 kg/m3, they can use 30% less diet but the production period would be 20% longer. Statement of relevance: This study has high relevance to the general field of commercial aquaculture because the experiment was carried out at a commercial fish farm, under real environmental conditions and management. Presented results are promising because show that bamboo substrates in cages improve the efficiency of the system up to 52 kg/m3. This production model may be an efficient alternative for family farmers.Instituto de Pesca APTA/SAA, Rodovia Washington Luiz (SP 310) km 445Instituto Agronômico de Campinas APTA/SAA, Postal Box 61FEIS - Universidade Estadual Paulista Julio de Mesquisata Filho - UNESP, Avenida Brasil, 56 - CentroFEIS - Universidade Estadual Paulista Julio de Mesquisata Filho - UNESP, Avenida Brasil, 56 - CentroAPTA/SAAUniversidade Estadual Paulista (Unesp)Garcia, F.Romera, D. M.Sousa, N. S.Paiva-Ramos, I. [UNESP]Onaka, E. M.2018-12-11T16:42:58Z2018-12-11T16:42:58Z2016-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article229-235application/pdfhttp://dx.doi.org/10.1016/j.aquaculture.2016.06.031Aquaculture, v. 464, p. 229-235.0044-8486http://hdl.handle.net/11449/16876710.1016/j.aquaculture.2016.06.0312-s2.0-849763842572-s2.0-84976384257.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAquaculture1,152info:eu-repo/semantics/openAccess2023-12-02T06:15:53Zoai:repositorio.unesp.br:11449/168767Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-02T06:15:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
title |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
spellingShingle |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir Garcia, F. Bamboo substrate Feed restriction Growth performance Monogenean Stocking density Trichodina |
title_short |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
title_full |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
title_fullStr |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
title_full_unstemmed |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
title_sort |
The potential of periphyton-based cage culture of Nile tilapia in a Brazilian reservoir |
author |
Garcia, F. |
author_facet |
Garcia, F. Romera, D. M. Sousa, N. S. Paiva-Ramos, I. [UNESP] Onaka, E. M. |
author_role |
author |
author2 |
Romera, D. M. Sousa, N. S. Paiva-Ramos, I. [UNESP] Onaka, E. M. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
APTA/SAA Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Garcia, F. Romera, D. M. Sousa, N. S. Paiva-Ramos, I. [UNESP] Onaka, E. M. |
dc.subject.por.fl_str_mv |
Bamboo substrate Feed restriction Growth performance Monogenean Stocking density Trichodina |
topic |
Bamboo substrate Feed restriction Growth performance Monogenean Stocking density Trichodina |
description |
In land-based pond cultures, periphyton is considered to be a complementary food source for cultured fish. In cage aquaculture, studies on the use of periphyton are scarce and do not support the viability of periphyton-based cage culture. The aim of this study was to evaluate the potential of periphyton-based cage culture of Nile tilapia in a hydroelectric reservoir in Brazil at three stocking densities and two feeding regimes. Sex-reversed male Nile tilapia Oreochromis niloticus (46.56 ± 2.53 g) were placed in 21 cages (6 m3 - 2 × 2 × 1.5 m each) with or without bamboo substrates for periphyton growth. A completely randomized design with three replicates per treatment was used to test the effect of substrate inclusion in the three stocking densities (80, 60, 40 kg of fish/m3) associated with two feeding regimes (100% and 50% of daily ration). Three cages without bamboo substrates were included in the experimental design as control group (CTRL) (80 kg/m3 and 100% of daily ration). The study demonstrates the efficiency of using substrates for Nile tilapia in cages in the reservoir. The presence of bamboo substrates improved the weight gain of fish but reduced the carrying capacity of the cage at the highest density. The concentration of dissolved oxygen in the cages was improved by the presence of substrate between 50 and 140 days of the trial and reduced after 155 days of culture. The inclusion of bamboo substrates inside the cages allows producing up to 52 kg/m3 of Nile tilapia using 32% less diet in a period almost 20% shorter than in the CTRL group. If farmers prefer to produce 80 kg/m3, they can use 30% less diet but the production period would be 20% longer. Statement of relevance: This study has high relevance to the general field of commercial aquaculture because the experiment was carried out at a commercial fish farm, under real environmental conditions and management. Presented results are promising because show that bamboo substrates in cages improve the efficiency of the system up to 52 kg/m3. This production model may be an efficient alternative for family farmers. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11-01 2018-12-11T16:42:58Z 2018-12-11T16:42:58Z |
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://dx.doi.org/10.1016/j.aquaculture.2016.06.031 Aquaculture, v. 464, p. 229-235. 0044-8486 http://hdl.handle.net/11449/168767 10.1016/j.aquaculture.2016.06.031 2-s2.0-84976384257 2-s2.0-84976384257.pdf |
url |
http://dx.doi.org/10.1016/j.aquaculture.2016.06.031 http://hdl.handle.net/11449/168767 |
identifier_str_mv |
Aquaculture, v. 464, p. 229-235. 0044-8486 10.1016/j.aquaculture.2016.06.031 2-s2.0-84976384257 2-s2.0-84976384257.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aquaculture 1,152 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
229-235 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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1799965147360395264 |