Improved digestibility of plant ingredient-based diets for European seabass (Dicentrarchus labrax) with exogenous enzyme supplementation

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Magalhaes, R (Author) Other; Diaz Rosales, P (Author) Other; Diogenes, AF (Author) Other; Enes, P (Author) FCUP; Oliva Teles, A (Author) FCUP; Peres, H (Author) FCUP

Journal

Title: Aquaculture Nutrition

Vol. 24

Pages: 1287-1295

ISSN: 1353-5773

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 19 Citations

Scopus - 20 Citations

Other information

Authenticus ID: P-00N-HFQ

DOI: 10.1111/anu.12666

Abstract (EN): This study evaluated the effect of supplementation of a plant ingredients-based diet with two levels of commercially digestive enzyme products: Synergen and Natugrain((R)) on the apparent digestibility coefficients (ADCs) of nutrients and on digestive enzyme activities in European seabass (Dicentrarchus labrax) juveniles. A control diet was formulated with 450 g/kg CP (200 g/kg from fish meal+800 g/kg from plant protein) and 180 g/kg CL (fish oil), and four other diets were made similar to the control but supplemented with 0.2g/kg or 0.4 g/kg of Synergen and Natugrain((R)). Digestive enzyme activities were not affected by dietary treatments. Nevertheless, chyme pH along the intestine of fish fed the Natugrain((R))-supplemented diets was reduced. The ADC of nutrients increased with exogenous digestive enzyme supplementation, with the highest ADC values being observed for the 0.4 g/kg Natugrain((R)) diet. The ADC of dry matter, protein, lipids, energy and phosphorus in this diet were 26%, 6%, 4%, 16% and 63% higher, respectively, than in the control diet. Overall, diet supplementation with exogenous enzyme complexes seems to have high potential for improving the utilization of plant feedstuff-rich diets for seabass juveniles. This study revealed that Natugrain((R)) was more effective than Synergen in improving the ADC of nutrients and energy in European seabass juveniles.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9