Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 372967
Title Deliverable 2: Report on the production of GIF by turbot, the effects on growth performance of turbot of local GIF production within RAS and the presence of GIF at commercial farm level
Author(s) Schram, E.; Heul, J.W. van der; Jol, J.G.; Vincon, B.; Bout, J.; Cornelisse, J.
Source IJmuiden : IMARES (Report / Wageningen IMARES C115/08) - 79
Department(s) Wageningen Marine Research
Publication type Research report
Publication year 2008
Keyword(s) visteelt - viskwekerijen - teeltsystemen - achterblijven in groei - groeieffecten - groeiremmers - tarbot - proeven - fish culture - fish farms - cropping systems - runting - growth effects - growth inhibitors - turbot - trials
Categories Aquaculture Nutrition and Feeding
Abstract One of the working hypotheses of this project is that growth retardation of turbot cultured in recirculating aquaculture systems (RAS) is caused by the accumulation of growth inhibiting factors (GIF) produced by the turbot themselves in the culture water. Our first goal was to demonstrate the production of growth inhibiting factors by turbot following the methodology of Yurl and Perlmutter. A series of successive experiments was performed. Extracts from turbot culture water were tested for GIF presence in early life stage tests using eggs and larvae and small scale growth trials with juveniles. Our second goal was to demonstrate the transfer of GIF between tanks. Four experiments involving the integration of experimental tanks in a farm scale setting were performed. Our third goal was to demonstrate the presence of GIF at commercial farms. Two juvenile growth trials were performed.
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