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https://doi.org/10.4995/thesis...
Doctoral thesis . 2015 . Peer-reviewed
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Sustitución de aceites de pescado en dietas de engorde de dorada (Sparus aurata) ricas en proteínas vegetales. Efectos sobre el crecimiento y los perfiles de ácidos grasos

Authors: Benedito Palos, Laura;

Sustitución de aceites de pescado en dietas de engorde de dorada (Sparus aurata) ricas en proteínas vegetales. Efectos sobre el crecimiento y los perfiles de ácidos grasos

Abstract

[ES]: El sector acuícola es una de las actividades industriales con más demanda de harinas y aceites de pescado. Sin embargo, debido al estancamiento de las pesquerías a nivel mundial, la actividad piscícola no puede estar basada únicamente en las reservas finitas de pescado. Por tanto, la sustitución de harinas y aceites de pescado por fuentes alternativas de materias primas resulta ineludible. Para abordar esta problemática, se analizó el efecto de dietas basadas en una sustitución conjunta de proteínas y aceites de pescado por ingredientes vegetales sobre el crecimiento y el perfil de ácidos grasos de doradas (Sparus aurata). El diseño de las dietas se realizó sustituyendo el aceite de pescado por una mezcla de aceites vegetales (17:58:25 de colza:linaza:palma) en un 0% (FO), 33% (33VO), 66% (66VO), 100% (VO). Todas las dietas se formularon con alta proporción de proteínas vegetales y se suplementaron con 1% de lecitina de soja y 0,55% de L-lisina.

[VA]: El sector aqüícola és una de les activitats industrials amb més demanda de farines i olis de peix. No obstant això, a causa de l’estancament de les pesqueries a nivell mundial, l’activitat piscícola no pot estar basada únicament en les reserves finites de peix. Per tant, la substitució de farines i olis de peix per fonts alternatives de matèries primeres resulta ineludible. Per abordar esta problemàtica, es va analitzar l’efecte de dietes basades en una substitució conjunta de proteïnes i olis de peix per ingredients vegetals sobre el creixement i el perfil d’àcids grassos de daurades (Sparus aurata). El disseny de les dietes es va realitzar substituint l’oli de peix per una mescla d’olis vegetals (17:58:25 de colza:llinós:palma) en un 0% (FO), 33% (33VO), 66% (66VO), 100% (VO). Totes les dietes es van formular amb alta proporció de proteïnes vegetals i es van suplementar amb 1% de lecitina de soja i 0,55% d‘Llisina.

[EN]: Aquaculture is one of the major consumers of fish meal and fish oil. However, the continuous expansion of aquaculture and the decreasing global availability of marine oil and fish meal force the industry to explore alternative and sustainable alimentary sources for fish feeds. To address this issue, the feasibility of combined replacement of fish meal and oil by vegetable ingredients was investigated in gilthead sea bream (Sparus aurata) and dietary effect on growth performance and tissue fatty acid profiles were examined. Four diets with a low level of fish meal inclusion were supplemented with lysine (0.55%) and contained soy lecithin (1%). Added oil was either fish oil (FO diet) or a blend of a vegetable oil mixture (17:58:25 of rapeseed:linseed:palm oils) replacing fish oil at 33, 66 and 100% (33VO, 66VO and VO diets).

216 páginas.-- Memoria presentada por Laura Benedito Palos para optar al grado de Doctor.

Peer reviewed

Keywords

Esparido, Proteínas vegetales, Somatomedina, 310502 - Piscicultura, Fosfolípidos, Aceites vegetales, Hormona del crecimiento, Lecitina, Ácidos grasos esenciales, Triglicéridos

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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