Dietary supplementation of mannan oligosaccharide on white sea bream (Diplodus sargus L.) larvae: Effects on development, gut morphology and salinity tolerance

TitleDietary supplementation of mannan oligosaccharide on white sea bream (Diplodus sargus L.) larvae: Effects on development, gut morphology and salinity tolerance
Publication TypeJournal Article
Year of Publication2010
AuthorsDimitroglou, A, Davies SJ, Sweetman J, Divanach P, Chatzifotis S
JournalAquaculture Research
Volume41
Issue9
Pagese245 - e251
KeywordsDiplodus sargus, Larvae, Mannan oligosaccharide, MOS, Salinity tolerance, White sea bream
Abstract

The influence of dietary mannan oligosaccharide (MOS) on the development, gut integrity and quality (in respect of stamina and survivability) of white sea bream Diplodus sargus L. larvae was investigated. White sea bream larvae were held under appropriate rearing conditions and fed Artemia, enriched by A1 DHA Selco™ with the addition or absence of MOS (Bio-Mos®). The results indicated that larval growth performance and survivability were not affected by the MOS supplementation. Light microscopy revealed that MOS supplementation significantly improved the intestinal morphology by increasing the villi surface area by over 12%. Transmission electron microscopy revealed that MOS supplementation increased the microvilli length by 26% compared with the control. Salinity challenge experiments showed that MOS significantly increased larval stamina and survival in both 0 and 60 mg L-1 salinity water by 13% and 22.9% respectively. These improvements in the larval quality at the early stages of fish development are important for the efficiency of intensive hatchery production. © 2010 The Authors. Journal Compilation © 2010 Blackwell Publishing Ltd.

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