Macronutrient selection through post-ingestive signals in sharpsnout seabream fed gelatine capsules and challenged with protein dilution

Almaida Pagán, Pedro Francisco; Rubio, V. C.; Mendiola, P.; Costa, J. de; Madrid, Juan A.

Publication:
Macronutrient selection through post-ingestive signals in sharpsnout seabream fed gelatine capsules and challenged with protein dilution

dc.contributor.author	Almaida Pagán, Pedro Francisco
dc.contributor.author	Rubio, V. C.
dc.contributor.author	Mendiola, P.
dc.contributor.author	Costa, J. de
dc.contributor.author	Madrid, Juan A.
dc.contributor.department	Fisiología
dc.date.accessioned	2024-06-21T08:00:56Z
dc.date.available	2024-06-21T08:00:56Z
dc.date.issued	2006-07
dc.description	© 2006 Elsevier Inc. All rights reserved. This document is the Published, version of a Published Work that appeared in final form in Physiology & Behavior. To access the final edited and published work see https://doi.org/10.1016/j.physbeh.2006.05.027
dc.description.abstract	Sharpsnout seabream ability for macronutrient self-selection was studied using gelatine capsules containing pure macronutrients. In particular, the existence of non-oropharyngeal chemosensory pathways involved on protein (P), fat (F) and carbohydrate (CH) selection, as well as sharpsnout seabream response to dietary protein dilution were investigated. In a sequence of experimental phases, sharpsnout seabream were fed a pelleted complete diet, an encapsulated complete diet or a combination of separately encapsulated pure macronutrients. In order to induce associative learning, capsules containing a given macronutrient were paired with a particular colour. The animals composed a diet containing 62.7% P, 21.3% CH and 16.0% F, in terms of macronutrient percentage intake, and this selection pattern was maintained throughout all experimental phases. In a second experiment, individually kept sharpsnout seabream were challenged with protein dilution. After protein capsules were diluted (from 91.9% P to 56.3% P) with cellulose, the animals increased their protein intake to compensate for dilution in such a way that their energy intake was not significantly modified (17.4 kJ/100 g BW vs. 17.6 kJ/100 g BW after dilution). These results show that sharpsnout seabream feeding on encapsulated diets are able to select and maintain a particular diet composition, as well as sustain their energy intake, without using the diet's oropharyngeal chemosensory properties. Moreover, they were also able to maintain their protein intake after dilution, which highlights the importance of this macronutrient in this omnivorous species.	es
dc.format	application/pdf	es
dc.format.extent	9	es
dc.identifier.citation	Physiology & Behavior 88 (2006) 550–558
dc.identifier.doi	https://doi.org/10.1016/j.physbeh.2006.05.027
dc.identifier.issn	Print: 0031-9384
dc.identifier.uri	http://hdl.handle.net/10201/142526
dc.language	eng	es
dc.publisher	Elsevier	es
dc.relation	This research was supported by grants from CICYT (AGL2004-08137-CO4-02/ACU to J.A. Madrid), “Ministerio de Educación y Ciencia (MEC)” (AP2002-1368 to P.F. Almaida-Pagán), and postdoctoral fellowships from “Fundación Séneca” and “Agencia Regional de Ciencia y Tecnología” (Science and Technology Plan for CARM 2003-2006, Seneca Program 2004) to V.C. Rubio.	es
dc.relation.requires	https://www.sciencedirect.com/science/article/abs/pii/S0031938406002356	es
dc.rights.accessRights	info:eu-repo/semantics/restrictedAccess
dc.subject	Macronutrient selection	es
dc.subject	Associative learning
dc.subject	Feeding behaviour
dc.subject	Non-oropharyngeal chemosensitivity
dc.subject	Gelatine capsules
dc.subject	Fish
dc.subject	Sharpsnout seabream
dc.subject	Protein dilution
dc.title	Macronutrient selection through post-ingestive signals in sharpsnout seabream fed gelatine capsules and challenged with protein dilution	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es