Growth performance, gut microbiota composition, health and welfare of European sea bass (Dicentrarchus labrax) fed an environmentally and economically sustainable low marine protein diet in sea cages.

Autor: Alfonso S; Fondazione COISPA ETS, 70126, Bari, Italy. sebastien.alfonso1@gmail.com., Mente E; Laboratory of Ichthyology-Culture and Pathology of Aquatic Animals, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece., Fiocchi E; National Reference Laboratory for Fish, Mollusc and Crustacean Diseases, Istituto Zooprofilattico Sperimentale delle Venezie, 35020, Legnaro, Italy., Manfrin A; National Reference Laboratory for Fish, Mollusc and Crustacean Diseases, Istituto Zooprofilattico Sperimentale delle Venezie, 35020, Legnaro, Italy., Dimitroglou A; Laboratory of Applied Hydrobiology, Department of Animal Science, Agricultural University of Athens, 11855, Athens, Greece., Papaharisis L; Department of Research and Development, AVRAMAR S.A., 19002, Paiania, Greece., Barkas D; Department of Research and Development, AVRAMAR S.A., 19002, Paiania, Greece., Toomey L; Fondazione COISPA ETS, 70126, Bari, Italy., Boscarato M; National Reference Laboratory for Fish, Mollusc and Crustacean Diseases, Istituto Zooprofilattico Sperimentale delle Venezie, 35020, Legnaro, Italy., Losasso C; Laboratory of Microbial Ecology and Genomics, Istituto Zooprofilattico Sperimentale delle Venezie, 35020, Legnaro, Italy., Peruzzo A; Laboratory of Microbial Ecology and Genomics, Istituto Zooprofilattico Sperimentale delle Venezie, 35020, Legnaro, Italy., Stefani A; Laboratory Medicine Service, Istituto Zooprofilattico Sperimentale delle Venezie, 35020, Legnaro, Italy., Zupa W; Fondazione COISPA ETS, 70126, Bari, Italy., Spedicato MT; Fondazione COISPA ETS, 70126, Bari, Italy., Nengas I; Hellenic Centre for Marine Research (HCMR), Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), 19013, Anavyssos, Greece., Lembo G; Fondazione COISPA ETS, 70126, Bari, Italy., Carbonara P; Fondazione COISPA ETS, 70126, Bari, Italy.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Dec 02; Vol. 13 (1), pp. 21269. Date of Electronic Publication: 2023 Dec 02.
DOI: 10.1038/s41598-023-48533-3
Abstrakt: The large use of fish meal/fish oil in carnivorous fish feeds is the main concern regarding environmental sustainability of aquaculture. Here, we evaluated the effects of an innovative diet, designed to be (1) environmentally sustainable by lowering the marine protein content while being (2) cost effective by using sustainable alternative raw materials with acceptable cost and produced on an industrial scale, on growth performance, gut microbiota composition, health and welfare of European sea bass (Dicentrarchus labrax), a key species of the Mediterranean marine aquaculture, reared in sea cages. Results show that the specific growth rate of fish fed the low marine protein diet was significantly lower than those fed conventional diet (0.67% vs 0.69%). Fatty acid profile of fillets from fish fed a low marine protein diet presented significant lower n-6 and higher n-3 content when compared to conventional ones. Then, a significant increase in the abundance of Vibrio and reduction of Photobacterium were found in the gut of fish fed with the low marine protein diet but effects on sea bass health needs further investigation. Finally, no major health and welfare alterations for fish fed the low marine protein diet were observed, combined with a potential slight benefit related to humoral immunity. Overall, these results suggest that despite the low marine protein diet moderately affects growth performance, it nevertheless may enhance environmental and economic sustainability of the sea bass aquaculture.
(© 2023. The Author(s).)
Databáze: MEDLINE
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