caa a22 4500 606229795 CHVBK 20210128101210.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10695-015-0110-5 doi (NATIONALLICENCE)springer-10.1007/s10695-015-0110-5 Effect of xylan oligosaccharides generated from corncobs on food acceptability, growth performance, haematology and immunological parameters of Dicentrarchus labrax fingerlings [Elektronische Daten] [Baha Abdelmalek, Dorra Driss, Fatma Kallel, Molka Guargouri, Hechmi Missaoui, Semia Chaabouni, Mohamed Ayadi, Ali Bougatef] 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±0.69g at initial density of 2.7±0.13kg/m3 were fed during 12weeks at 0gkg−1 diet, 5gkg−1 diet and 10gkg−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 (5gkg−1 diet) in the diet improves growth and stimulates the immunity and makes D. labrax fingerlings more resistant to infection by A. hydrophila. Springer Science+Business Media Dordrecht, 2015 Xylooligosaccharides nationallicence Dicentrarchus labrax nationallicence Growth performance nationallicence Immunology nationallicence Liver histology nationallicence XOS : Xylooligosaccharide nationallicence PER : Protein efficiency ratio nationallicence FCR : Feed conversion ratio nationallicence RBC : Red blood corpuscles nationallicence WBC : White blood corpuscles nationallicence Hb : Haemoglobin nationallicence PCV : Pack cell volume nationallicence Abdelmalek Baha Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut Driss Dorra Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut Kallel Fatma Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut Guargouri Molka Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia aut Missaoui Hechmi Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia aut Chaabouni Semia Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut Ayadi Mohamed Laboratory of Alimentary Analyses, National School of Engineering of Sfax, Sfax, Tunisia aut Bougatef Ali Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut Fish Physiology and Biochemistry Springer Netherlands 41/6(2015-12-01), 1587-1596 0920-1742 41:6<1587 2015 41 10695 https://doi.org/10.1007/s10695-015-0110-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10695-015-0110-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Abdelmalek Baha Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut NATIONALLICENCE 700 1- Driss Dorra Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut NATIONALLICENCE 700 1- Kallel Fatma Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut NATIONALLICENCE 700 1- Guargouri Molka Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia aut NATIONALLICENCE 700 1- Missaoui Hechmi Institut National Agronomique de Tunisie, 43, Avenue Charles Nicolle, 1082, Tunis, Tunisia aut NATIONALLICENCE 700 1- Chaabouni Semia Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut NATIONALLICENCE 700 1- Ayadi Mohamed Laboratory of Alimentary Analyses, National School of Engineering of Sfax, Sfax, Tunisia aut NATIONALLICENCE 700 1- Bougatef Ali Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, route de Soukra, 3038, Sfax, Tunisia aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Springer Netherlands 41/6(2015-12-01), 1587-1596 0920-1742 41:6<1587 2015 41 10695