RT journal article
T1 Dietary sodium heptanoate helps to improve feed efficiency, growth hormone status and swimming performance in gilthead sea bream (Sparus aurata).
A1 Martos Sitcha, Juan Antonio
A1 Simo Mirabet, Paula
A1 Piazzon, M. Carla
A1 Heras Rodríguez, Veronica de las
A1 Calduch-Giner, Josep
A1 Puyalto, Mónica
A1 Tinsley, John
A1 Makol, Alex
A1 Sitjà-Bobadilla, Ariadna
A1 Pérez-Sánchez, Jaume
A2 Biología
K1 feed efficiency
K1 fish
K1 fish meal
K1 growth hormone
K1 medium-chain fatty acids
K1 swim performance
AB The potential benefits of a commercial preparation of heptanoate (NOREL, HEPTON®) were evaluated in an 11-week gilthead sea bream feeding trial (May–August), using a factorial design with four isoproteic and isoenergetic diets. Fish meal (FM) was added at 200 g/kg in D1–D2 diets and at 50 g/kg in D3–D4 diets, which also contained fish peptones and plant proteins as source of proteins. Heptanoate was added at 3 g/kg in D2 and D4 diets. All fish grew from 13–14 g to 81–84 g with an overall feed efficiency (FE) of 0.91–0.94. An early impairment of FE (weeks 1–4) was found with the standard FM-based diet (D1), but this detrimental condition was reversed by heptanoate, increasing FE from 0.88 in D1 fish to 0.99 in D2 fish. Further improvements were progressively diluted over time, remaining D2 and D3–D4 fed fish almost undistinguishable through all the trial. Heptanoate supplementation produced higher hepatic glycogen depots, but no signs of histopathological damage were found in liver or intestine. Other lasting heptanoate effects included changes in plasma antioxidant capacity, plasma cortisol and growth hormone levels, and measures of respirometry in swimming performance tests. Altogether, it supports the potential use of heptanoate to speed up adaptive and healthy metabolic states of farmed fish to cope with challenging culture conditions.
PB Wiley
SN 1365-2095
YR 2018
FD 2018-05-03
LK http://hdl.handle.net/10498/35295
UL http://hdl.handle.net/10498/35295
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 22-sep-2026