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dc.contributor.author
Morales, Gabriel Alejandro  
dc.contributor.author
Marquez, L.  
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Saenz de Rodrigañez, M.  
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Bermúdez, L.  
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Robles, R.  
dc.contributor.author
Moyano, F. J.  
dc.date.available
2017-05-11T20:48:36Z  
dc.date.issued
2014-04  
dc.identifier.citation
Morales, Gabriel Alejandro; Marquez, L.; Saenz de Rodrigañez, M.; Bermúdez, L.; Robles, R.; et al.; Effect of phytase supplementation of a plant-based diet on phosphorus and nitrogen bioavailability in sea bream Sparus aurata; Wiley; Aquaculture Nutrition; 20; 2; 4-2014; 172-182  
dc.identifier.issn
1353-5773  
dc.identifier.uri
http://hdl.handle.net/11336/16353  
dc.description.abstract
To assess to what extent addition of phytase to a plant-based diet results in spatio-temporal changes of phytate, available P, soluble protein, total amino acids and the activity of the main digestive proteases in gilthead sea bream, fish were fed two plant-based diets with or without phytase. Stomach, proximal intestine and distal intestine contents were monitored for these parameters at 0, 1, 2, 4 and 6 h after feeding. A reduction (P < 0.0001) of the soluble P–IP6 in the stomach when phytase was added to the diet was observed. Within stomach, most of the total P–IP6 was precipitated (86%), possibly due to the low acidification capacity of the sea bream (pH > 4), but 57% of the dietary P–IP6 was dephosphorylated, suggesting that phytase could have the capacity to dephosphorylate insoluble IP6 at such pH. An increment (60%) (P < 0.01) in total gastric protease activity was observed by phytase addition, this being the first demonstration of the in vivo effect of IP6 on the pepsin activity in fish stomach. Gastric pH and residence time of the digesta inside the stomach are critical factors for an efficient phytase action and improve P and N bioavailability in plant-based diets used in fish aquaculture.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Amino Acids  
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Digestive Proteases  
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Phosphorus  
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Phytase  
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Phytate  
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Sparus Aurata  
dc.subject.classification
Otras Producción Animal y Lechería  
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Producción Animal y Lechería  
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CIENCIAS AGRÍCOLAS  
dc.title
Effect of phytase supplementation of a plant-based diet on phosphorus and nitrogen bioavailability in sea bream Sparus aurata  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-05-08T21:18:04Z  
dc.identifier.eissn
1365-2095  
dc.journal.volume
20  
dc.journal.number
2  
dc.journal.pagination
172-182  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Hoboken  
dc.description.fil
Fil: Morales, Gabriel Alejandro. Universidad de Almería; España. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Marquez, L.. Universidad de Almería; España  
dc.description.fil
Fil: Saenz de Rodrigañez, M.. Universidad de Almería; España  
dc.description.fil
Fil: Bermúdez, L.. Fundación Centro Tecnológico de Acuicultura de Andalucía; España  
dc.description.fil
Fil: Robles, R.. Fundación Centro Tecnológico de Acuicultura de Andalucía; España  
dc.description.fil
Fil: Moyano, F. J.. Universidad de Almería; España  
dc.journal.title
Aquaculture Nutrition  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/anu.12063  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/anu.12063/abstract