IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Eel farming in an indoor recirculated system: technical, biological, and economical aspects
Jespersen, T. (1989). Eel farming in an indoor recirculated system: technical, biological, and economical aspects, in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 185-196
In: De Pauw, N. et al. (Ed.) (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene, Belgium. ISBN 90-71625-03-6. 1-592 pp., more

Available in Author 
Document type: Conference paper

Keyword
    Marine

Author  Top 
  • Jespersen, T.

Abstract
    A recirculating system has been developed at the Danish Aquaculture Institute since 1981. The system now consists of 10 circular fish tanks (total area 92m²), a swirl concentrator, a reservoir, and four biological submerged upflow filters. The total volume of the system is 100m³. Pure oxygen is added to fulfill the oxygen requirements. Water renewal corresponds to 200 l.kg-1 feed.d-1. The temperature is 25°C. Results from periods without disturbance (e.g. reconstruction of units) show a mean specific growth rate for the whole eel population stocked in the tanks of 0.96%.d-1 varying trom 1.49%.d-1 for eels from 2 to 59, to 0.52%.d-1 for eels exceeding 200g. The feeding level varied from 1.92%.d-1 to 0.96%.d-1.k-1 of eels in the same size groups; the mean feed conversion was 1.47. A mean stocking density of 80-90kg.m-2 tank area is feasible in recirculating systems corresponding to a production of 250-300kg of eels.m-2 tank area.yr-1. The running costs (excluding interest and depreciation of the invested capital and labour costs) are about Dkr 30 to produce 1 kg eel in a fully loaded system.

All data in IMIS is subject to the VLIZ privacy policy Top | Author