Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles
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 w...
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Pontificia Universidad Católica de Valparaíso
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ftconicet:oai:ri.conicet.gov.ar:11336/92105 2023-10-09T21:49:56+02:00 Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles Bravo, Jonathan P. Hernández, Adrián J. Morales, Gabriel Alejandro Dantagnan, Patricio Márquez, Lorenzo application/pdf http://hdl.handle.net/11336/92105 eng eng Pontificia Universidad Católica de Valparaíso 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 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 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ COMMERCIAL DIET DIET BUFFERING CAPACITY GASTRIC EVACUATION GASTRIC PH GASTRIC PROTEASES SALMO SALAR https://purl.org/becyt/ford/4.2 https://purl.org/becyt/ford/4 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3856/vol46-issue5-fulltext-20 2023-09-24T18:22:26Z 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 Article in Journal/Newspaper Atlantic salmon Salmo salar CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Morales ENVELOPE(-55.833,-55.833,-63.000,-63.000) Latin American Journal of Aquatic Research 46 5 1083 1090 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
COMMERCIAL DIET DIET BUFFERING CAPACITY GASTRIC EVACUATION GASTRIC PH GASTRIC PROTEASES SALMO SALAR https://purl.org/becyt/ford/4.2 https://purl.org/becyt/ford/4 |
spellingShingle |
COMMERCIAL DIET DIET BUFFERING CAPACITY GASTRIC EVACUATION GASTRIC PH GASTRIC PROTEASES SALMO SALAR https://purl.org/becyt/ford/4.2 https://purl.org/becyt/ford/4 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 |
topic_facet |
COMMERCIAL DIET DIET BUFFERING CAPACITY GASTRIC EVACUATION GASTRIC PH GASTRIC PROTEASES SALMO SALAR https://purl.org/becyt/ford/4.2 https://purl.org/becyt/ford/4 |
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. 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 |
format |
Article in Journal/Newspaper |
author |
Bravo, Jonathan P. Hernández, Adrián J. Morales, Gabriel Alejandro Dantagnan, Patricio Márquez, Lorenzo |
author_facet |
Bravo, Jonathan P. Hernández, Adrián J. Morales, Gabriel Alejandro Dantagnan, Patricio Márquez, Lorenzo |
author_sort |
Bravo, Jonathan P. |
title |
Digestive coordination of the gastric function in atlantic salmon salmo salar juveniles |
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 |
publisher |
Pontificia Universidad Católica de Valparaíso |
url |
http://hdl.handle.net/11336/92105 |
long_lat |
ENVELOPE(-55.833,-55.833,-63.000,-63.000) |
geographic |
Argentina Morales |
geographic_facet |
Argentina Morales |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
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 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 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3856/vol46-issue5-fulltext-20 |
container_title |
Latin American Journal of Aquatic Research |
container_volume |
46 |
container_issue |
5 |
container_start_page |
1083 |
op_container_end_page |
1090 |
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1779312979151421440 |