Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 431616
Title Constraints on Energy Intake in Fish: The Link between Diet Composition, Energy Metabolism, and Energy Intake in Rainbow Trout
Author(s) Subramanian, S.; Schrama, J.W.; Figueiredo-Silva, A.C.; Kaushik, S.J.; Verreth, J.A.J.; Geurden, I.
Source PLoS One 7 (2012)4. - ISSN 1932-6203
DOI https://doi.org/10.1371/journal.pone.0034743
Department(s) Aquaculture and Fisheries
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) european sea-bass - voluntary feed-intake - salmon salmo-salar - oncorhynchus-mykiss - food-intake - digestible energy - growing-pigs - utilization efficiency - oreochromis-niloticus - dicentrarchus-labrax
Abstract The hypothesis was tested that fish fed to satiation with iso-energetic diets differing in macronutrient composition will have different digestible energy intakes (DEI) but similar total heat production. Four iso-energetic diets (2×2 factorial design) were formulated having a contrast in i) the ratio of protein to energy (P/E): high (HP/E) vs. low (LP/E) and ii) the type of non-protein energy (NPE) source: fat vs. carbohydrate which were iso-energetically exchanged. Triplicate groups (35 fish/tank) of rainbow trout were hand-fed each diet twice daily to satiation for 6 weeks under non-limiting water oxygen conditions. Feed intake (FI), DEI (kJ kg-0.8 d-1) and growth (g kg-0.8 d-1) of trout were affected by the interaction between P/E ratio and NPE source of the diet (P0.05). Our data suggest that the control of DEI in trout might be a function of heat production, which in turn might reflect a physiological limit related with oxidative metabolism.
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