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Title: Musculoskeletal growth modulation in gilthead sea bream juveniles reared at high water temperature and fed with palm and rapeseed oils-based diets
Author: Balbuena-Pecino, Sara
Riera-Heredia, Natàlia
Gasch-Navalón, Esther
Sánchez-Moya, Albert
Fontanillas, Ramon
Gutiérrez Fruitós, Joaquín
Navarro Álvarez, Isabel
Capilla Campos, Encarnación
Keywords: Orada
Olis vegetals
Alimentació animal
Sparus aurata
Vegetable oils
Animal feeding
Issue Date: 21-Jan-2021
Publisher: MDPI
Abstract: The upward trend of seawater temperature has encouraged improving the knowledge of its consequences on fish, considering also the development of diets including vegetable ingredients as an approach to achieve a more sustainable aquaculture. This study aims to determine the effects on musculoskeletal growth of: (1) a high-water temperature of 28 °C (versus 21 °C) in gilthead sea bream juveniles (Sparus aurata) fed with a diet rich in palm oil and, (2) feeding the fish reared at 28 °C with two other diets containing rapeseed oil or an equilibrated combination of both vegetable oils. Somatic parameters and mRNA levels of growth hormone-insulin-like growth factors (GH-IGFs) axis-, osteogenic-, myogenic-, lipid metabolism- and oxidative stress-related genes in vertebra bone and/or white muscle are analyzed. Overall, the data indicate that high-water rearing temperature in this species leads to different adjustments through modulating the gene expression of members of the GH-IGFs axis (down-regulating igf-1, its receptors, and binding proteins) and also, to bone turnover (reducing the resorption-activity genes cathepsin K (ctsk) and matrix metalloproteinase-9 (mmp9)) to achieve harmonic musculoskeletal growth. Moreover, the combination of palm and rapeseed oils seems to be the most beneficial at high-water rearing temperature for both balanced somatic growth and muscular fatty acid uptake and oxidation.
Note: Reproducció del document publicat a:
It is part of: Animals, 2021, vol. 11, num. 2, p. 260
Related resource:
ISSN: 2076-2615
Appears in Collections:Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia)

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