A Compact Recirculation Unit for the Rearing and Maintenance of Fish
- 1 July 1972
- journal article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 29 (7) , 1071-1074
- https://doi.org/10.1139/f72-153
Abstract
The use of a compact recirculation system for rearing rainbow trout is described. An 8-month experiment showed that up to 75 kg offish could be maintained in a healthy condition in a 1600-liter tank using a make-up water rate of only 1.0 liter/min. Temperature, oxygen, pH, ammonia nitrogen, and nitrate nitrogen levels were satisfactorily controlled. An average weight gain of 8% per week was achieved with a feed rate of 2% of body weight per day. Fish mortality was insignificant.Keywords
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