Effects of dietary marine sulphated polysaccharides (Algimun®) on growth performance, immune responses and disease resistance of juvenile gilthead seabream (Sparus aurata) to Photobacterium damselae subsp. piscicida.

Autor: Güroy D; Department of Aquaculture, Armutlu Vocational School, Yalova University, 77500, Armutlu, Yalova, Turkey. Electronic address: dguroy@yalova.edu.tr., Güroy B; Department of Food Processing, Armutlu Vocational School, Yalova University, 77500, Armutlu, Yalova, Turkey., Bilen S; Department of Aquaculture, Faculty of Fisheries, Kastamonu University, 37150, Kuzeykent, Kastamonu, Turkey., Terzi E; Department of Aquaculture, Faculty of Fisheries, Kastamonu University, 37150, Kuzeykent, Kastamonu, Turkey., Kenanoğlu ON; Department of Aquaculture, Faculty of Fisheries, Kastamonu University, 37150, Kuzeykent, Kastamonu, Turkey., García-Suárez M; Olmix Group, ZA du Haut du Bois, 56580, Bréhan, France., Marzin D; Olmix Group, ZA du Haut du Bois, 56580, Bréhan, France., Mantoğlu S; Department of Food Processing, Armutlu Vocational School, Yalova University, 77500, Armutlu, Yalova, Turkey., Karadal O; Department of Aquaculture, Faculty of Fisheries, İzmir Katip Çelebi University, 35620, Çiğli, İzmir, Turkey., Şahin İ; Department of Motor Vehicles and Transportation Technologies, Altınova Vocational School, Yalova University, 77700, Altınova, Yalova, Turkey., Kuşku H; Department of Marine Technology Engineering, Faculty of Marine Science and Technology, Çanakkale Onsekiz Mart University, 17020, Çanakkale, Turkey.
Jazyk: angličtina
Zdroj: Fish & shellfish immunology [Fish Shellfish Immunol] 2022 Aug; Vol. 127, pp. 1139-1147. Date of Electronic Publication: 2022 Jul 21.
DOI: 10.1016/j.fsi.2022.07.054
Abstrakt: The present study evaluated the effects of a dietary mix of marine sulphated polysaccharides, named Algimun® (AL), supplementation to gilthead seabream (Sparus aurata) juveniles in terms of growth performance, immune responses, and resistance against Photobacterium damselae subsp. piscicida. A total of 240 fish (initial mean weight of 6.00 ± 0.03 g) was randomly separated into 12 tanks (400 L, 20 fish per tank) distributed in four replicates. Fish were fed three experimental diets: a basal diet (Control), and a basal diet with two inclusion rates of Algimun® as 3 g/kg (AL0.3) and 5 g/kg (AL0.5) for 30 days before bacterial infection with P. damselae subsp. piscicida. After a 30-day feeding-period, growth performance was significantly improved in AL0.3 and AL0.5 groups compared to the control group (P < 0.05). AL0.3 and AL0.5 groups showed significantly higher lysozyme activity and myeloperoxidase activity when compared to the control group (P < 0.05). The gene expression of immune mediators (IL-1β, IL-6, IL-10, IL-18, TNF-α and COX-2) was significantly upregulated in the intestine, spleen and head kidney in AL0.3 and AL0.5 groups when compared to the control group (P < 0.05). Eight days post-challenge, the survival rate against P. damselae subsp. piscicida was numerically higher in fish within AL0.3 and AL0.5 groups compared to control (+20%). The study findings suggest that marine sulphated polysaccharides (Algimun®) could be used as an immunomodulator in gilthead seabream to support animal's health and boost resistance in case of disease outbreak.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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