Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles

Autores
Bravo, Jonathan P.; Hernández, Adrián J.; Morales, Gabriel Alejandro; Dantagnan, Patricio; Márquez, Lorenzo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Artificial diets have been reported to produce suboptimal pH values in the stomach of salmonid species. Therefore, it is interesting to investigate the gastric function of different species fed commercial diets. In the present work, two groups of Atlantic salmon juveniles were either fasted or fed with a commercial diet. The gastric and duodenal pH values were measured over a 25 h post-prandial period and, dry matter, moisture and protease activity in the gastric chyme of the fed group were also determined. In the fed group, the gastric pH dropped to 3.5, and duodenal pH increased from 7.0 to 7.5 at the 4th h post-feeding, whereas fasted fish showed no significant changes in the gastric pH or duodenal pH. Fed animals showed: i) two discrete events of evacuation, before the 2nd hand after the 8th h of digestion, ii) a change in the moisture of the gastric chyme from less than 10% in the diet to 60% at the 2nd h post-feeding, and iii) a maximal gastric proteases activity of 600 U mL-1 at the 2nd h followed by a nearly constant of value of ~300 U mL-1. It can be concluded that the juveniles of the Atlantic salmon can suitably acidify a commercial diet to a value generally accepted as optimal for gastric proteases of fish, and to retain about 2/3 of the ingested diet under such conditions and at a nearly constant protease activity until the 8th h of digestion.
Fil: Bravo, Jonathan P.. Universidad Católica de Temuco; Chile
Fil: Hernández, Adrián J.. Universidad Católica de Temuco; Chile
Fil: Morales, Gabriel Alejandro. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Dantagnan, Patricio. Universidad Católica de Temuco; Chile
Fil: Márquez, Lorenzo. Universidad Católica de Temuco; Chile
Materia
COMMERCIAL DIET
DIET BUFFERING CAPACITY
GASTRIC EVACUATION
GASTRIC PH
GASTRIC PROTEASES
SALMO SALAR
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/92105
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/92105
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Digestive coordination of the gastric function in atlantic salmon salmo salar juvenilesBravo, Jonathan P.Hernández, Adrián J.Morales, Gabriel AlejandroDantagnan, PatricioMárquez, LorenzoCOMMERCIAL DIETDIET BUFFERING CAPACITYGASTRIC EVACUATIONGASTRIC PHGASTRIC PROTEASESSALMO SALARhttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4Artificial diets have been reported to produce suboptimal pH values in the stomach of salmonid species. Therefore, it is interesting to investigate the gastric function of different species fed commercial diets. In the present work, two groups of Atlantic salmon juveniles were either fasted or fed with a commercial diet. The gastric and duodenal pH values were measured over a 25 h post-prandial period and, dry matter, moisture and protease activity in the gastric chyme of the fed group were also determined. In the fed group, the gastric pH dropped to 3.5, and duodenal pH increased from 7.0 to 7.5 at the 4th h post-feeding, whereas fasted fish showed no significant changes in the gastric pH or duodenal pH. Fed animals showed: i) two discrete events of evacuation, before the 2nd hand after the 8th h of digestion, ii) a change in the moisture of the gastric chyme from less than 10% in the diet to 60% at the 2nd h post-feeding, and iii) a maximal gastric proteases activity of 600 U mL-1 at the 2nd h followed by a nearly constant of value of ~300 U mL-1. It can be concluded that the juveniles of the Atlantic salmon can suitably acidify a commercial diet to a value generally accepted as optimal for gastric proteases of fish, and to retain about 2/3 of the ingested diet under such conditions and at a nearly constant protease activity until the 8th h of digestion.Fil: Bravo, Jonathan P.. Universidad Católica de Temuco; ChileFil: Hernández, Adrián J.. Universidad Católica de Temuco; ChileFil: Morales, Gabriel Alejandro. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Dantagnan, Patricio. Universidad Católica de Temuco; ChileFil: Márquez, Lorenzo. Universidad Católica de Temuco; ChilePontificia Universidad Católica de Valparaíso2018-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92105Bravo, Jonathan P.; Hernández, Adrián J.; Morales, Gabriel Alejandro; Dantagnan, Patricio; Márquez, Lorenzo; Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles; Pontificia Universidad Católica de Valparaíso; Latin American Journal of Aquatic Research; 46; 5; 12-2018; 1083-10900718-560XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://lajar.ucv.cl/index.php/rlajar/article/view/vol46-issue5-fulltext-20/994info:eu-repo/semantics/altIdentifier/url/https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501083&lng=es&nrm=iso&tlng=eninfo:eu-repo/semantics/altIdentifier/doi/10.3856/vol46-issue5-fulltext-20info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:35:07Zoai:ri.conicet.gov.ar:11336/92105instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:35:08.074CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
title Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
spellingShingle Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
Bravo, Jonathan P.
COMMERCIAL DIET
DIET BUFFERING CAPACITY
GASTRIC EVACUATION
GASTRIC PH
GASTRIC PROTEASES
SALMO SALAR
title_short Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
title_full Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
title_fullStr Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
title_full_unstemmed Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
title_sort Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
dc.creator.none.fl_str_mv Bravo, Jonathan P.
Hernández, Adrián J.
Morales, Gabriel Alejandro
Dantagnan, Patricio
Márquez, Lorenzo
author Bravo, Jonathan P.
author_facet Bravo, Jonathan P.
Hernández, Adrián J.
Morales, Gabriel Alejandro
Dantagnan, Patricio
Márquez, Lorenzo
author_role author
author2 Hernández, Adrián J.
Morales, Gabriel Alejandro
Dantagnan, Patricio
Márquez, Lorenzo
author2_role author
author
author
author
dc.subject.none.fl_str_mv COMMERCIAL DIET
DIET BUFFERING CAPACITY
GASTRIC EVACUATION
GASTRIC PH
GASTRIC PROTEASES
SALMO SALAR
topic COMMERCIAL DIET
DIET BUFFERING CAPACITY
GASTRIC EVACUATION
GASTRIC PH
GASTRIC PROTEASES
SALMO SALAR
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.2
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Artificial diets have been reported to produce suboptimal pH values in the stomach of salmonid species. Therefore, it is interesting to investigate the gastric function of different species fed commercial diets. In the present work, two groups of Atlantic salmon juveniles were either fasted or fed with a commercial diet. The gastric and duodenal pH values were measured over a 25 h post-prandial period and, dry matter, moisture and protease activity in the gastric chyme of the fed group were also determined. In the fed group, the gastric pH dropped to 3.5, and duodenal pH increased from 7.0 to 7.5 at the 4th h post-feeding, whereas fasted fish showed no significant changes in the gastric pH or duodenal pH. Fed animals showed: i) two discrete events of evacuation, before the 2nd hand after the 8th h of digestion, ii) a change in the moisture of the gastric chyme from less than 10% in the diet to 60% at the 2nd h post-feeding, and iii) a maximal gastric proteases activity of 600 U mL-1 at the 2nd h followed by a nearly constant of value of ~300 U mL-1. It can be concluded that the juveniles of the Atlantic salmon can suitably acidify a commercial diet to a value generally accepted as optimal for gastric proteases of fish, and to retain about 2/3 of the ingested diet under such conditions and at a nearly constant protease activity until the 8th h of digestion.
Fil: Bravo, Jonathan P.. Universidad Católica de Temuco; Chile
Fil: Hernández, Adrián J.. Universidad Católica de Temuco; Chile
Fil: Morales, Gabriel Alejandro. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Dantagnan, Patricio. Universidad Católica de Temuco; Chile
Fil: Márquez, Lorenzo. Universidad Católica de Temuco; Chile
description Artificial diets have been reported to produce suboptimal pH values in the stomach of salmonid species. Therefore, it is interesting to investigate the gastric function of different species fed commercial diets. In the present work, two groups of Atlantic salmon juveniles were either fasted or fed with a commercial diet. The gastric and duodenal pH values were measured over a 25 h post-prandial period and, dry matter, moisture and protease activity in the gastric chyme of the fed group were also determined. In the fed group, the gastric pH dropped to 3.5, and duodenal pH increased from 7.0 to 7.5 at the 4th h post-feeding, whereas fasted fish showed no significant changes in the gastric pH or duodenal pH. Fed animals showed: i) two discrete events of evacuation, before the 2nd hand after the 8th h of digestion, ii) a change in the moisture of the gastric chyme from less than 10% in the diet to 60% at the 2nd h post-feeding, and iii) a maximal gastric proteases activity of 600 U mL-1 at the 2nd h followed by a nearly constant of value of ~300 U mL-1. It can be concluded that the juveniles of the Atlantic salmon can suitably acidify a commercial diet to a value generally accepted as optimal for gastric proteases of fish, and to retain about 2/3 of the ingested diet under such conditions and at a nearly constant protease activity until the 8th h of digestion.
publishDate 2018
dc.date.none.fl_str_mv 2018-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/92105
Bravo, Jonathan P.; Hernández, Adrián J.; Morales, Gabriel Alejandro; Dantagnan, Patricio; Márquez, Lorenzo; Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles; Pontificia Universidad Católica de Valparaíso; Latin American Journal of Aquatic Research; 46; 5; 12-2018; 1083-1090
0718-560X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/92105
identifier_str_mv Bravo, Jonathan P.; Hernández, Adrián J.; Morales, Gabriel Alejandro; Dantagnan, Patricio; Márquez, Lorenzo; Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles; Pontificia Universidad Católica de Valparaíso; Latin American Journal of Aquatic Research; 46; 5; 12-2018; 1083-1090
0718-560X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://lajar.ucv.cl/index.php/rlajar/article/view/vol46-issue5-fulltext-20/994
info:eu-repo/semantics/altIdentifier/url/https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501083&lng=es&nrm=iso&tlng=en
info:eu-repo/semantics/altIdentifier/doi/10.3856/vol46-issue5-fulltext-20
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pontificia Universidad Católica de Valparaíso
publisher.none.fl_str_mv Pontificia Universidad Católica de Valparaíso
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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