Journal article
Feed intake, growth and metabolism of Nile tilapia (Oreochromis niloticus) in relation to dissolved oxygen concentration
A Tran-Duy, AA van Dam, JW Schrama
Aquaculture Research | WILEY | Published : 2012
Abstract
The objectives of the present study were to determine, for Nile tilapia of different body weights and fed to satiation, (1) the incipient dissolved oxygen (DO) concentration at which feed intake starts to level off and (2) the effect of DO on nitrogen and energy balances. Two successive experiments were conducted with two weight classes of male Nile tilapia (>200g, Experiment 1, and <100g, Experiment 2). Twelve aquaria were assigned to four DO levels in each experiment. Fish were fed to apparent satiation for 16 and 20 days in Experiments 1 and 2 respectively. The DO-feed intake curve of fish<100g appeared to level off at a DO of 3mgL -1, while that of fish>200g continued to increase as DO i..
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Awarded by WOTRO (Netherlands foundation for the advancement of tropical research)
Awarded by NWO (Den Haag, the Netherlands)
Funding Acknowledgements
This study was financed by WOTRO (Netherlands foundation for the advancement of tropical research; Project no WB89-155) and was carried out in the aquatic respirometry facilities co-funded by NWO (Den Haag, the Netherlands, code 805-34.025). Thanks are due to Henrik Weitkamp and Menno ter Veld for their dedicated technical support in operating the experimental system. We would also like to acknowledge Ep Eding for technical advice during the experiments and Ronald Booms and Tino Leffering for technical assistance during the chemical analyses.