Effects of Dietary β-glucan Supplementation on Growth, Innate Immune, and Capacity Against Pathogen Streptococcus iniae of Juvenile Pompano (Trachinotus ovatus)
Date
2019
Authors
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Narrator
Transcriber
Annotator
Journal Title
Journal ISSN
Volume Title
Publisher
The Israeli Journal of Aquaculture - Bamidgeh
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
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.
Description
Keywords
Pompano, Trachinotus ovatus, β-glucan, immunity, Streptococcus iniae
Citation
Extent
10 pages
Format
Geographic Location
Time Period
Related To
Related To (URI)
Table of Contents
Rights
Rights Holder
Local Contexts
Collections
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.