Effects of tank colour and light intensity on feed intake, growth rate and energy expenditure of juvenile Eurasian perch, Perca fluviatilis L

Abstract

Eurasian perch (Perca fluviatilis) is receiving increasing attention as a new species in freshwater aquaculture. Understanding perch behaviour and performance in culture is important to optimize the design and management of tanks, and other culture conditions. The objective of this study was to evaluate how different combinations of tank colour and light intensity affect the feed intake, growth and energy expenditure of juvenile perch. Feed intake, growth rate and energetic growth efficiency were measured using groups of perch exposed to different combinations of tank colour (white, grey or black) and light intensity (200 or 1100 1x). Six groups of six perch were exposed to each colour/light combination. The initial average weight (+/- SD) of the fish over all experimental rounds was 59.6 g (+/- 6.6). Perch in white and grey tanks ate more than the perch in black tanks (P

Keywords

Perca fluviatilis; tank colour; Light intensity; feed intake; growth rate; growth efficiency

Published in

Aquaculture
2007, volume: 272, number: 1-4, pages: 312-318
Publisher: ELSEVIER SCIENCE BV

SLU Authors

• Strand, Åsa

  • Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
    

• Alanärä, Anders

  • Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
    

• Staffan, Fia

  • Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
    

• Magnhagen, Carin

  • Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Fish and Aquacultural Science

Publication identifier

• DOI: https://doi.org/10.1016/j.aquaculture.2007.08.052

Permanent link to this page (URI)

https://res.slu.se/id/publ/15017