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dc.contributor.author
Hernández, David Roque
dc.contributor.author
Barrios, Carlos Eduardo
dc.contributor.author
Santinón, Juan José
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Sánchez, Sebastián
dc.contributor.author
Baldisserotto, Bernardo
dc.date.available
2022-11-17T11:39:19Z
dc.date.issued
2018-04
dc.identifier.citation
Hernández, David Roque; Barrios, Carlos Eduardo; Santinón, Juan José; Sánchez, Sebastián; Baldisserotto, Bernardo; Effect of fasting and feeding on growth, intestinal morphology and enteroendocrine cell density in Rhamdia quelen juveniles; Wiley Blackwell Publishing, Inc; Aquaculture Research; 49; 4; 4-2018; 1512-1520
dc.identifier.issn
1355-557X
dc.identifier.uri
http://hdl.handle.net/11336/178138
dc.description.abstract
This study was carried out to assess the effect of fasting and feeding on growth, intestinal morphology and density of cholecystokinin (CCK-) and neuropeptide Y (NPY-) immunoreactive cells in Rhamdia quelen. Fish were fed during 30 days with three commercial feeds containing different protein levels (T1 = 25%, T2 = 30% and T3 = 45%) while one group remained food deprived (T0). Our results show that the T3 group presented higher final mean weight and specific growth rate, while food-deprived group showed a significant weight loss. Histological analyses showed that the epithelial area of the intestine was significantly affected by fasting. Also, immunohistochemical analyses showed changes in enteroendocrine cells density, according to nutritional status. Cholecystokinin cell density was higher in T2 and T3 groups, while no differences in NPY cell density were observed between fed groups.Neuropeptide Y and CCK cell densities decreased in fasted group. Nevertheless, this group presented a higher NPY:CCK cell ratio (5:1) compared to fed groups (1?1.5:1), suggesting NPY acts as a peripheral orexigenic factor. These results show that the structure and endocrine functions of R. quelen intestine respond with a downregulation mechanism to endure long-term starvation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cholecystokinin
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Immunohistochemistry
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Intestine
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Neuropeptide Y
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Otras Agricultura, Silvicultura y Pesca
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Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Effect of fasting and feeding on growth, intestinal morphology and enteroendocrine cell density in Rhamdia quelen juveniles
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-11-16T22:25:13Z
dc.journal.volume
49
dc.journal.number
4
dc.journal.pagination
1512-1520
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Hernández, David Roque. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina
dc.description.fil
Fil: Barrios, Carlos Eduardo. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
dc.description.fil
Fil: Santinón, Juan José. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
dc.description.fil
Fil: Sánchez, Sebastián. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
dc.description.fil
Fil: Baldisserotto, Bernardo. Universidade Federal de Santa Maria; Brasil
dc.journal.title
Aquaculture Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/are.13606
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/are.13606
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