Article (Scientific journals)
Effect of xylan oligosaccharides generated from corncobs on food acceptability, growth performance, haematology and immunological parameters of Dicentrarchus labrax fingerlings.
Abdelmalek, Baha Eddine; Driss, Dorra; Kallel, Fatma et al.
2015In Fish Physiology and Biochemistry, 41 (6), p. 1587-96
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Keywords :
Hemoglobins; Immunoglobulins; Xylans; Dicentrarchus labrax; Growth performance; Immunology; Liver histology; Xylooligosaccharides
Abstract :
[en] The objective of this study was to determine the effect of two levels of inclusion of xylan oligosaccharides (XOS) extracted from corncob on growth, feed utilization, immune status and disease resistance of Mediterranean sea bass (Dicentrarchus labrax) fingerlings. Specimens of 4.75 ± 0.69 g at initial density of 2.7 ± 0.13 kg/m(3) were fed during 12 weeks at 0 g kg(-1) diet, 5 g kg(-1) diet and 10 g kg(-1) diet, dietary XOS level of inclusion in a commercial sea bass diet. Feeding the fish at both XOS dietary inclusion levels significantly increased weight gain, protein efficiency ratio and feed conversion ratio. Feeding of supplemented diets to fish led to reducing mortalities after challenging with A. hydrophila. The haematological and immunological parameters were assayed in both pre-challenged and post-challenged groups. There was an increased trend in red blood corpuscles, white blood corpuscles, pack cell volume, haemoglobin (Hb %) and serum protein content in treated groups over the control as time elapsed with the feeding trials. The serum immunoglobulin level and lysozyme activity showed an increased trend in the fed groups. Histological features of the liver showed lower lipid vacuolization and regular-shaped morphology of hepatocytes around the sinusoidal spaces denoting a better utilization of dietary nutrients supported with the morphometric data. In conclusion, XOS added at a designated dose (5 g kg(-1) diet) in the diet improves growth and stimulates the immunity and makes D. labrax fingerlings more resistant to infection by A. hydrophila.
Disciplines :
Food science
Author, co-author :
Abdelmalek, Baha Eddine;  Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia.
Driss, Dorra;  Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia. dorra_driss@yahoo.fr.
Kallel, Fatma;  Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia.
Guargouri, Molka;  Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia.
Missaoui, Hechmi;  Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia.
Chaabouni, Semia Ellouz;  Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia. ; Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia.
Ayadi, Mohamed ;  Laboratory of Alimentary Analyses, National School of Engineering of Sfax, Sfax, Tunisia.
Bougatef, Ali;  Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia.
Language :
English
Title :
Effect of xylan oligosaccharides generated from corncobs on food acceptability, growth performance, haematology and immunological parameters of Dicentrarchus labrax fingerlings.
Publication date :
December 2015
Journal title :
Fish Physiology and Biochemistry
ISSN :
0920-1742
eISSN :
1573-5168
Publisher :
Kluwer Academic Publishers, Nl
Volume :
41
Issue :
6
Pages :
1587-96
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 December 2024

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