The effect of dietary taurine and its potential biosynthesis on juvenile grey mullet (Mugil cephalus) performance

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dc.contributor.authorKoven, William
dc.contributor.authorBracha, Chen
dc.contributor.authorNixon, Oriya
dc.contributor.authorIsraeli, Dor
dc.contributor.authorTandler, Amos
dc.contributor.authorMeiri-Ashkenazi, Iris
dc.contributor.authorRosenfeld, Hanna
dc.date.accessioned2023-02-13T18:15:31Z
dc.date.available2023-02-13T18:15:31Z
dc.date.issued2023
dc.description.abstractThe grey mullet is a catadromous species that spawns in the taurine-rich seawater environment, followed by the young fish generally migrating to less saline, low taurine waters during the larva-juvenile transition. Consequently, this study aimed to (1) determines whether there is a dietary taurine requirement in juvenile grey mullet for enhanced growth and (2) the potential for taurine biosynthesis. The experimental system consisted of sixteen 400-l V-tanks, where filtered, UV-treated ambient seawater (40 ‰) entered the bottom of the tanks at a rate of 7 tank exchanges/day. This allowed the testing of four 1 mm pelleted diets (0, 0.5, 1.0, and 2.0% taurine DW diet) in replicates of 4 tanks/treatment for 58 days. Grey mullet juveniles demonstrated (P<0.05) a specific requirement for a 0.5% taurine DW diet for improved growth. Fish fed the taurine diets displayed populations with a markedly (P < 0.05) higher average number of surviving fish (23.4±1.1) of moderately sized (10- 20 g) cohorts than smaller (< 10 g) individuals (12.5±1.1). In contrast, the fish fed the taurine control (0% taurine) exhibited similar average numbers of small and moderate sized fish (18.0±3.6-20.0±4.1). Dietary taurine accumulated highly (P<0.05) in the muscles in a dose dependent manner but less so (P<0.05) in eyes, and liver. The gene expression of liver cysteine sulfinic acid decarboxylase (CSD) exhibited an upregulation (P<0.05) with taurine diets from 0 to 1% but was down regulated (P<0.05) in fish fed the 2% taurine DW diet.
dc.format.extent14 pages
dc.identifier.doihttps://doi.org/10.46989/001c.70351
dc.identifier.issn0792-156X
dc.identifier.urihttps://hdl.handle.net/10524/68893
dc.relation.ispartofThe Israeli Journal of Aquaculture - Bamidgeh
dc.subjecttaurine
dc.subjectjuvenile fish
dc.subjecttaurine biosynthesis
dc.subjectgrey mullet
dc.subjectcysteine sulfinate decarboxylase
dc.subjectosmolyte
dc.titleThe effect of dietary taurine and its potential biosynthesis on juvenile grey mullet (Mugil cephalus) performance
dc.typeArticle
dc.type.dcmiText
prism.volume75

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Volume 75, Issue 1, 2023