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Lemarie, Gilles; Martin, Jean-louis; Dutto, Gilbert; Garidou, C. |
A study on nitrogenous and phosphorous waste production in European seabass (Dicentrarchus labrax) was carried out in a flow-through land-based farm. The main objectives were (i) to calculate nitrogenous (N) and phosphorous (P) waste production (particulate and dissolved) from in situ measurements for different rearing ponds with specific fish biomasses, fish sizes and flow rates, (ii) to establish nitrogenous and phosphorous waste production budgets, ratios and equations, and (iii) to compare, for the whole farm, in situ measurements to estimate N and P waste production from waste equations. Waste production was manifest by an increase in concentrations of total ammonia nitrogen, total Kjeldhal nitrogen, particulate nitrogen, dissolved phosphorus and... |
Tipo: Text |
Palavras-chave: Fish farm waste; Excretion; Nitrogenous budget; Phosphorous budget; Dicentrarchus labrax. |
Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/1998/publication-872.pdf |
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Lopes Galasso, Helena; Callier, Myriam; Bastianelli, Denis; Blancheton, Jean-paul; Aliaume, Catherine. |
In aquaculture, it is extremely important to determine the composition of fish farm waste to evaluate its potential impacts and to improve its reuse. Near-infra red spectroscopy (NIRS), an alternative to standard chemical analytical techniques, is a quick non-invasive method to assess physical and chemical composition, reducing the cost of routine analysis. We developed NIRS calibration models for organic matter (OM), total organic carbon (TOC), total organic nitrogen (TON), the carbon/nitrogen ratio (C/N), total phosphorus (TP) and the lipid content of marine fish particulate waste. To obtain a wide range of compositions of fish waste, decomposition time, feed loss, and inter-specific variations were taken into account. The NIRS calibration models were... |
Tipo: Text |
Palavras-chave: Near infrared spectroscopy; Fish farm waste; Faeces; Dicentrarchus labrax; Chemical composition. |
Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00382/49369/49771.pdf |
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