Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 430283
Title Feed intake, growth and metabolism of Nile tilapia (Oreochromis niloticus) in relation to dissolved oxygen concentration
Author(s) Tran-Duy, A.; Dam, A.A. van; Schrama, J.W.
Source Aquaculture Research 43 (2012)5. - ISSN 1355-557X - p. 730 - 744.
Department(s) Aquaculture and Fisheries
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) bass dicentrarchus-labrax - salmon oncorhynchus-nerka - rainbow-trout - respiratory responses - energy-utilization - channel catfish - swimming speed - dynamic action - fish - consumption
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 (>200 g, Experiment 1, and 200 g continued to increase as DO increased from 2.6 to 6.0 mg L-1. The latter curve suggests that the incipient DO for fish>200 g is about 5.5 mg L-1. Fish tended to reduce the energy requirement for maintenance as DO declined. A DO reduction caused an increase in the apparent digestibility coefficient (ADC), but further declines in DO to levels below a critical level decreased ADC. The DO did not have a considerable effect on the metabolizable energy: digestible energy ratio of the diet.
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