Short-term supplementation of gilthead seabream (Sparus aurata) diets with Nannochloropsis gaditana modulates intestinal microbiota without affecting intestinal morphology and function

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Jorge, SS (Author) Other; Enes, P (Author) FCUP; Claudia Alexandra dos Reis Serra (Author) FCUP; Castro, C (Author) Other; Iglesias, P (Author) Other; Oliva Teles, A (Author) FCUP; Ana Couto (Author) FCUP

Journal

Title: Aquaculture Nutrition

Vol. 25

Pages: 1388-1398

ISSN: 1353-5773

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 23 Citations

Scopus - 25 Citations

Other information

Authenticus ID: P-00Q-Z5W

DOI: 10.1111/anu.12959

Abstract (EN): Nannochloropsis gaditana was tested as functional ingredient in low fishmeal diets for gilthead seabream juveniles, and its short-term effects were evaluated in terms of intestinal morphology, digestive function, intestinal immunological and oxidative status, and intestinal microbiota. A diet with 850 g/kg of the protein provided by plant feedstuffs and 150 g/kg provided by fishmeal was used as control, and three other diets identical to the control were supplemented with 5, 7.5 and 15 g/kg N. gaditana meal and fed to 56.6 g fish for 37 days. At the end of this period, intestinal mucosa integrity and digestive capacity (luminal enzyme activity and absorption) were not altered by dietary microalgae supplementation. Intestinal transcript levels of key markers of inflammation (IL-1 beta and TNF-alpha) and of key enzymes involved in redox homeostasis (CuZnSOD, MnSOD and catalase) were also similar across experimental groups. However, microbiota richness increased with dietary supplementation of microalgae, and such modulation requires further investigation, particularly regarding its potential effects on disease resistance at short and long term.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11