Optimal temperature for growth and feed conversion of immature cod (Gadus morhua L.)

Optimal temperature for growth and feed conversion of immature cod (Gadus morhua L.) Five size groups of hatchery reared cod (2–109 g) and three size groups of wild cod (447–2213 g) were reared at a range of constant temperatures. All groups were fed to satiation, the hatchery fish on dry feed and the wild fish on capelin and shrimp. The optimal temperature for growth decreased linearly with fish weight on a log scale from 17°C for 2 g fish to 7°C for 2000 g fish. Similarly, the optimal temperature for feed conversion decreased with fish weight, from 15°C for 2 g fish to 7°C for 2000 g fish. Growth rate at optimal temperature declined linearly with fish weight on a log–log scale from 5.8 to 0.36% per day for 2 and 2000 g cod, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ICES Journal of Marine Science Oxford University Press

Optimal temperature for growth and feed conversion of immature cod (Gadus morhua L.)

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Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
ISSN
1054-3139
eISSN
1095-9289
D.O.I.
10.1006/jmsc.2000.0986
Publisher site
See Article on Publisher Site

Abstract

Five size groups of hatchery reared cod (2–109 g) and three size groups of wild cod (447–2213 g) were reared at a range of constant temperatures. All groups were fed to satiation, the hatchery fish on dry feed and the wild fish on capelin and shrimp. The optimal temperature for growth decreased linearly with fish weight on a log scale from 17°C for 2 g fish to 7°C for 2000 g fish. Similarly, the optimal temperature for feed conversion decreased with fish weight, from 15°C for 2 g fish to 7°C for 2000 g fish. Growth rate at optimal temperature declined linearly with fish weight on a log–log scale from 5.8 to 0.36% per day for 2 and 2000 g cod, respectively.

Journal

ICES Journal of Marine ScienceOxford University Press

Published: Jan 1, 2001

Keywords: bioenergetics cod feed conversion Gadus morhua growth optimal temperature

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