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Growth of the Eurasian perch ( Perca fluviatilis L.) reared in floating cages and in water recirculated system: first results

Growth of the Eurasian perch ( Perca fluviatilis L.) reared in floating cages and in water... For 8 weeks, perch (22–25 g) were reared in a water recirculated system (WRS) and in floating cages (FC), and fed with an artificial food for trout. These two culture systems resulted in similar specific growth rates (1.1–1.4%/day). However, at 4% feeding rate, WRS ensured higher survival rates (90–100 %) vs. FC (70–80%), better food conversion indices (3.0 vs 4.1) and lower growth variability. WRS appeared more adapted to raise perch than FC. Nevertheless, sexual growth dimorphism in favour of females existed in WRS with restricted feeding rate (2 % body weight per day). Likewise, this preliminary study suggested an effect of the rearing system on the perch body composition. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Growth of the Eurasian perch ( Perca fluviatilis L.) reared in floating cages and in water recirculated system: first results

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References (21)

Publisher
Wiley
Copyright
Copyright © 1996 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.1996.tb00086.x
Publisher site
See Article on Publisher Site

Abstract

For 8 weeks, perch (22–25 g) were reared in a water recirculated system (WRS) and in floating cages (FC), and fed with an artificial food for trout. These two culture systems resulted in similar specific growth rates (1.1–1.4%/day). However, at 4% feeding rate, WRS ensured higher survival rates (90–100 %) vs. FC (70–80%), better food conversion indices (3.0 vs 4.1) and lower growth variability. WRS appeared more adapted to raise perch than FC. Nevertheless, sexual growth dimorphism in favour of females existed in WRS with restricted feeding rate (2 % body weight per day). Likewise, this preliminary study suggested an effect of the rearing system on the perch body composition.

Journal

Journal of Applied Ichthyology – Wiley

Published: Dec 1, 1996

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