Influence of stocking density on the rearing of juvenile common snook in laboratory

Detalhes bibliográficos
Autor(a) principal: Filho, José Jerônimo de Souza
Data de Publicação: 2003
Outros Autores: Cerqueira, Vinicius Ronzani
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/6706
Resumo: The objective of this work was to evaluate the influence of stocking density on growth, feed conversion ratio and survival of juvenile common snook (Centropomus undecimalis). Fish were collected from the wild and trained to accept artificial diets. Individuals (13±0.4 cm and 23±0.3 g) were stocked into nine 5-m³ circular fiberglass tanks at three different densities: 3, 6 and 9 fish/m³ during a period of 180 days. Tanks were supplied with seawater and continuous aeration. Total ammonia-nitrogen (0 to 0.5 mg/L), water temperature (23.3 to 30.6ºC), salinity (17 to 34 g/L), pH (7.8 to 8.4) and dissolved oxygen concentration (4.8 to 6.9 mg/L) were similar in all tanks. Feed conversion rate (1.88, 2.06 and 2.31) and survival (100%, 98.9% and 96.3%) were significantly improved for fish stocked at the lower densities (3 and 6/m³). There were significant differences in average weight (110, 87 and 80 g) and length (20, 18.5 and 18 cm) among treatments. Fish stocked at the lowest density (3/m³) showed the highest growth rate, and there was no difference between the others. However, final biomass (332, 511 and 703 g/m3) was directly correlated with density. A low density influences positively growth, survival and feed conversion in common snook rearing.
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spelling Influence of stocking density on the rearing of juvenile common snook in laboratoryInfluência da densidade de estocagem no cultivo de juvenis de robalo-flecha mantidos em laboratórioCentropomus undecimalis; saltwater fish; feed conversion; growth rate; survival; rearing techniquesCentropomus undecimalis; peixe marinho; conversão alimentar; taxa de crescimento; sobrevivência; técnica de criaçãoThe objective of this work was to evaluate the influence of stocking density on growth, feed conversion ratio and survival of juvenile common snook (Centropomus undecimalis). Fish were collected from the wild and trained to accept artificial diets. Individuals (13±0.4 cm and 23±0.3 g) were stocked into nine 5-m³ circular fiberglass tanks at three different densities: 3, 6 and 9 fish/m³ during a period of 180 days. Tanks were supplied with seawater and continuous aeration. Total ammonia-nitrogen (0 to 0.5 mg/L), water temperature (23.3 to 30.6ºC), salinity (17 to 34 g/L), pH (7.8 to 8.4) and dissolved oxygen concentration (4.8 to 6.9 mg/L) were similar in all tanks. Feed conversion rate (1.88, 2.06 and 2.31) and survival (100%, 98.9% and 96.3%) were significantly improved for fish stocked at the lower densities (3 and 6/m³). There were significant differences in average weight (110, 87 and 80 g) and length (20, 18.5 and 18 cm) among treatments. Fish stocked at the lowest density (3/m³) showed the highest growth rate, and there was no difference between the others. However, final biomass (332, 511 and 703 g/m3) was directly correlated with density. A low density influences positively growth, survival and feed conversion in common snook rearing.O objetivo deste trabalho foi analisar a influência da densidade de estocagem no crescimento, conversão alimentar e sobrevivência de juvenis de robalo-flecha (Centropomus undecimalis). Os peixes foram coletados em ambiente natural e treinados a aceitar dietas artificiais. Os indivíduos, com comprimento total de 13±0,4 cm e peso de 23±0,3 g foram estocados em tanques circulares de fibra de vidro de 5 m³, com água do mar e aeração contínua, nas densidades de 3, 6 e 9 peixes/m³, por 180 dias. Os valores de amônia total (0 a 0,5 mg/L), temperatura da água (23,3 a 30,6ºC), salinidade (17 a 34 g/L), pH (7,8 a 8,4) e oxigênio dissolvido (4,8 a 6,9 mg/L) apresentaram padrão similar entre os tratamentos. A conversão alimentar (1,88, 2,06 e 2,31) e a sobrevivência (100%, 98,9% e 96,3%) foram significativamente melhores nos tratamentos com 3 e 6 peixes/m³. As médias finais de peso (110, 87 e 80 g) e comprimento total (20, 18,5 e 18 cm) apresentaram diferença significativa. A maior taxa de crescimento foi observada com 3 peixes/m³; entre as demais não houve diferença. Entretanto, a biomassa final (332, 511 e 703 g/m3) foi diretamente proporcional à densidade. A baixa densidade favorece o cultivo do robalo em relação ao crescimento, sobrevivência e conversão alimentar.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFilho, José Jerônimo de SouzaCerqueira, Vinicius Ronzani2003-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6706Pesquisa Agropecuaria Brasileira; v.38, n.11, nov. 2003; 1317-1322Pesquisa Agropecuária Brasileira; v.38, n.11, nov. 2003; 1317-13221678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6706/3763info:eu-repo/semantics/openAccess2014-08-11T19:46:07Zoai:ojs.seer.sct.embrapa.br:article/6706Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-11T19:46:07Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Influence of stocking density on the rearing of juvenile common snook in laboratory
Influência da densidade de estocagem no cultivo de juvenis de robalo-flecha mantidos em laboratório
title Influence of stocking density on the rearing of juvenile common snook in laboratory
spellingShingle Influence of stocking density on the rearing of juvenile common snook in laboratory
Filho, José Jerônimo de Souza
Centropomus undecimalis; saltwater fish; feed conversion; growth rate; survival; rearing techniques
Centropomus undecimalis; peixe marinho; conversão alimentar; taxa de crescimento; sobrevivência; técnica de criação
title_short Influence of stocking density on the rearing of juvenile common snook in laboratory
title_full Influence of stocking density on the rearing of juvenile common snook in laboratory
title_fullStr Influence of stocking density on the rearing of juvenile common snook in laboratory
title_full_unstemmed Influence of stocking density on the rearing of juvenile common snook in laboratory
title_sort Influence of stocking density on the rearing of juvenile common snook in laboratory
author Filho, José Jerônimo de Souza
author_facet Filho, José Jerônimo de Souza
Cerqueira, Vinicius Ronzani
author_role author
author2 Cerqueira, Vinicius Ronzani
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Filho, José Jerônimo de Souza
Cerqueira, Vinicius Ronzani
dc.subject.por.fl_str_mv Centropomus undecimalis; saltwater fish; feed conversion; growth rate; survival; rearing techniques
Centropomus undecimalis; peixe marinho; conversão alimentar; taxa de crescimento; sobrevivência; técnica de criação
topic Centropomus undecimalis; saltwater fish; feed conversion; growth rate; survival; rearing techniques
Centropomus undecimalis; peixe marinho; conversão alimentar; taxa de crescimento; sobrevivência; técnica de criação
description The objective of this work was to evaluate the influence of stocking density on growth, feed conversion ratio and survival of juvenile common snook (Centropomus undecimalis). Fish were collected from the wild and trained to accept artificial diets. Individuals (13±0.4 cm and 23±0.3 g) were stocked into nine 5-m³ circular fiberglass tanks at three different densities: 3, 6 and 9 fish/m³ during a period of 180 days. Tanks were supplied with seawater and continuous aeration. Total ammonia-nitrogen (0 to 0.5 mg/L), water temperature (23.3 to 30.6ºC), salinity (17 to 34 g/L), pH (7.8 to 8.4) and dissolved oxygen concentration (4.8 to 6.9 mg/L) were similar in all tanks. Feed conversion rate (1.88, 2.06 and 2.31) and survival (100%, 98.9% and 96.3%) were significantly improved for fish stocked at the lower densities (3 and 6/m³). There were significant differences in average weight (110, 87 and 80 g) and length (20, 18.5 and 18 cm) among treatments. Fish stocked at the lowest density (3/m³) showed the highest growth rate, and there was no difference between the others. However, final biomass (332, 511 and 703 g/m3) was directly correlated with density. A low density influences positively growth, survival and feed conversion in common snook rearing.
publishDate 2003
dc.date.none.fl_str_mv 2003-11-01
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/6706
url https://seer.sct.embrapa.br/index.php/pab/article/view/6706
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/6706/3763
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.38, n.11, nov. 2003; 1317-1322
Pesquisa Agropecuária Brasileira; v.38, n.11, nov. 2003; 1317-1322
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
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