The effect of oxygen saturation on the growth and feed conversion of juvenile Atlantic cod (Gadus morhua L.)

Helgi Thorarensen; Arnþór Gústavsson; Snorri Gunnarsson; Jón Árnason; Agnar Steinarsson; Rannveig Björnsdóttir; Albert K.D. Imsland

doi:10.1016/j.aquaculture.2017.04.002

The effect of oxygen saturation on the growth and feed conversion of juvenile Atlantic cod (Gadus morhua L.)

Helgi Thorarensen^*, Arnþór Gústavsson, Snorri Gunnarsson, Jón Árnason, Agnar Steinarsson, Rannveig Björnsdóttir, Albert K.D. Imsland

^*Corresponding author for this work

Aquaculture and Fish Biology

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

In land-based fish farms, water quality can be controlled to support maximum growth and good feed conversion. Oxygen is an important water quality parameter in aquaculture and the objective of this study was to detect the range of oxygen saturations that maximizes growth of juvenile Atlantic cod. The fish (initial body mass 21.9g) were reared at five different levels of oxygen saturation: 65%, 81%, 103%, 121% and 150% of air saturation, for 98days. At oxygen saturation under 100%, the growth of the fish decreased linearly with progressively lower oxygen saturation with the final body mass of fish reared at 65% saturation being 24% lower than that of fish reared at 103% saturation. The final body mass of fish reared at 150% saturation was significantly higher (7%) than that of fish reared at 103% saturation. Feed intake was also affected by oxygen saturation and was proportional to growth while the feed conversion ratio was not significantly affected by oxygen levels. The results suggest that oxygen saturation of at least 100% is required to obtain maximum growth of juvenile Atlantic cod.

Original language	English
Pages (from-to)	24-28
Number of pages	5
Journal	Aquaculture
Volume	475
DOIs	https://doi.org/10.1016/j.aquaculture.2017.04.002
Publication status	Published - 1 Jun 2017

Bibliographical note

Funding Information:
This work was funded by grants from the AVS R&D Fund of Ministry of Fisheries and Agriculture in Iceland (Grant No. R020-09) and the Technology Development Fund of the Icelandic Research Council (Grant no: 081302808-10).

Publisher Copyright:
© 2017

Other keywords

Aquaculture
Fish
Hyperoxia
Hypoxia

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10.1016/j.aquaculture.2017.04.002

Cite this

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abstract = "In land-based fish farms, water quality can be controlled to support maximum growth and good feed conversion. Oxygen is an important water quality parameter in aquaculture and the objective of this study was to detect the range of oxygen saturations that maximizes growth of juvenile Atlantic cod. The fish (initial body mass 21.9g) were reared at five different levels of oxygen saturation: 65%, 81%, 103%, 121% and 150% of air saturation, for 98days. At oxygen saturation under 100%, the growth of the fish decreased linearly with progressively lower oxygen saturation with the final body mass of fish reared at 65% saturation being 24% lower than that of fish reared at 103% saturation. The final body mass of fish reared at 150% saturation was significantly higher (7%) than that of fish reared at 103% saturation. Feed intake was also affected by oxygen saturation and was proportional to growth while the feed conversion ratio was not significantly affected by oxygen levels. The results suggest that oxygen saturation of at least 100% is required to obtain maximum growth of juvenile Atlantic cod.",

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AU - Gústavsson, Arnþór

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AU - Árnason, Jón

AU - Steinarsson, Agnar

AU - Björnsdóttir, Rannveig

AU - Imsland, Albert K.D.

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The effect of oxygen saturation on the growth and feed conversion of juvenile Atlantic cod (Gadus morhua L.)

Abstract

Bibliographical note

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