Nutritional value of whole cereal meals for European sea bass (Dicentrarchus labrax) juveniles

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Ana Couto (Author) FCUP; Peres, H (Author) FCUP; Oliva Teles, A (Author) FCUP; Enes, P (Author) FCUP

Journal

Title: Aquaculture

Vol. 473

Pages: 128-134

ISSN: 0044-8486

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 12 Citations

Other information

Authenticus ID: P-00M-VMM

DOI: 10.1016/j.aquaculture.2017.01.031

Abstract (EN): The nutritional value of whole wheat, corn, rye and barley was evaluated for European sea bass. Four isoproteic and isolipidic diets containg 30% of each whole cereal meal were formulated. A growth trial and a digestibility trial were conducted and fish performance was evaluated in terms of growth, feed intake, feed utilization, macronutrients digestibility, liver composition, glycaemia and cholesterolemia levels and gut histomorphology. Growth and feed utilization ranged from 1.43 to 1.46 and from 0.55 to 0.58, respectively, and were similar among experimental groups. Whole body and liver composition, hepatosomatic and visceral indexes were also not affected by dietary composition. Corn diet revealed the lower dry matter (62.9) and starch (55.5) apparent digestibility coefficients. Protein digestibility in fish fed the rye diet was the lowest of all groups (91.3) and differed from that of wheat diet group (93.2), which might be due to antinutritional factors present in this feedstuff. Plasmatic glucose levels suggested a slower absorption rate in fish fed barley and corn diets. No signs of enteropathy related to the whole cereal meals were observed. Among cereals tested, rye seemed to be the less tolerated by sea bass, although all diets were well accepted and sea bass performed equally well with all diets.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7