Please use this identifier to cite or link to this item: http://hdl.handle.net/10524/62964

Effects of Dietary β-glucan Supplementation on Growth, Innate Immune, and Capacity Against Pathogen Streptococcus iniae of Juvenile Pompano (Trachinotus ovatus)

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Title:Effects of Dietary β-glucan Supplementation on Growth, Innate Immune, and Capacity Against Pathogen Streptococcus iniae of Juvenile Pompano (Trachinotus ovatus)
Authors:Do-Huu, H.
Nguyen, T.N.H.
Tran, V.H
Keywords:Pompano
Trachinotus ovatus
β-glucan
immunity
Streptococcus iniae
Date Issued:2019
Publisher:The Israeli Journal of Aquaculture - Bamidgeh
Abstract:This study investigated the effect of dietary β-glucan on growth, immunity, and resistance against Streptococci in pompano T. ovatus. Pompano were fed a control diet, and diets which included 0.10% or 0.20% of β-glucan. After being fed the diets for 3-weeks, growth rate, survival, blood parameters, and immunity were examined, and the fish were challenged with Steptococcus aniae for 10 days. At the end of the feeding trial, RBC, WBC, WBC:RBC ratio, and lymphocytes significantly increased (P ≤ 0.032), while monocytes significantly decreased (P ≤ 0.007) in fish fed 0.10-0.20% of β-glucan. Moreover, lysozyme was significantly higher (P ≤ 0.003) in fish fed β-glucan, while the phagocytic ratio was only significantly higher (P = 0.037) in fish fed 0.10% β-glucan. Furthermore, fish fed 0.10-0.20% β-glucan showed higher protection against S. iniae (P ≤ 0.002). Thus, a diet of β-glucan is recommended to improve non-specific immunity, growth in T. ovatus, and also to limit the adverse effects of S. aniae disease in this species.
Pages/Duration:10 pages
URI:http://hdl.handle.net/10524/62964
ISSN:0792-156X
Appears in Collections: Volume 71, 2019


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