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Registros recuperados: 7
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Aquaculture system diversity and sustainable development: fish farms and their representation Inra
Lazard, J.; Baruthio, A.; Mathé, S.; Rey-Valette, H.; Chia, E.; Clément, O.; Aubin, J.; Morissens, P.; Mikosalek, O.; Legendre, M.; Levang, P.; Blancheton, J. P.; René, F..
Les initiatives de développement durable de l’aquaculture ont jusqu’à présent surtout consisté dans la production de codes de conduite, de guides de bonnes pratiques, de standards, etc., élaborés pour la plupart d’entre eux par des organisations internationales, le secteur industriel et des organisations non gouvernementales. Ces documents ont largement été produits selon un processus de type « top down » et principalement inspirés par les modèles issus de l’aquaculture industrielle intensive de crevettes et de poissons marins (saumon principalement). Cependant, l’essentiel de la production de l’aquaculture mondiale provient d’exploitations de petite et moyenne taille, en Asie principalement qui contribue pour 92 % au volume total de la production aquacole...
Tipo: Journal Article Palavras-chave: SUSTAINABLE DEVELOPMENT; SUSTAINABLE AQUACULTURE; TYPOLOGY; SOCIAL REPRESENTATIONS.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201089940ad1&uri=/notices/prodinra1/2010/10/
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Comparison of two methods for evaluating waste of a flow though trout farm Inra
Roque d'Orbcastel, E.; Blancheton, J.P.; Boujard, T.; Aubin, J.; Moutounet, Y.; Przybyla, C.; Belaud, A..
Tipo: Journal Article Palavras-chave: REJET PISCICOLE WASTE; TROUT FARM; SUSPENDED SOLIDS; NITROGEN; PHOSPHORUS.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20085e824c9b&uri=/notices/prodinra1/2008/01/
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Economic values of growth and feed efficiency for fish farming in recirculating aquaculture system with density and nitrogen output limitations: a case study with African catfish (Clarias gariepinus) ArchiMer
Besson, M.; Komen, H.; Aubin, J.; De Boer, I. J. M.; Poelman, M.; Quillet, Edwige; Vancoillie, C.; Vandeputte, Marc; Van Arendonk, J A M.
In fish farming, economic values (EV) of breeding goal traits are lacking, even though they are key parameters when defining selection objectives. The aim of this study was to develop a bioeconomic model to estimate EV of 2 traits representing production performances in fish farming: the thermal growth coefficient (TGC) and the feed conversion ratio (FCR). This approach was applied to a farm producing African catfish (Clarias gariepinus) in a recirculating aquaculture system (RAS). In the RAS, 2 factors could limit production level: the nitrogen treatment capacity of the biofilter or the fish density in rearing tanks at harvest. Profit calculation includes revenue from fish sales, cost of juveniles, cost of feed, cost of waste water treatment, and fixed...
Tipo: Text Palavras-chave: Economic values; Feed conversion ratio; Fish farming; Recirculating aquaculture system; Selective breeding; Thermal growth coefficient.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00245/35593/34277.pdf
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Effect of production quotas on economic and environmental values of growth rate and feed efficiency in sea cage fish farming ArchiMer
Besson, Mathieu; De Boer, I. J. M.; Vandeputte, Marc; Van Arendonk, J. A. M.; Quillet, E.; Komen, H.; Aubin, J..
In sea cage fish farming, production quotas aim to constrain the impact of fish farming on the surrounding ecosystem. It is unknown how these quotas affect economic profitability and environmental impact of genetic improvement. We combined bioeconomic modelling with life cycle assessment (LCA) to calculate the economic (EV) and environmental (ENV) values of thermal growth coefficient (TGC) and feed conversion ratio (FCR) of sea bass reared in sea cages, given four types of quota commonly used in Europe: annual production (Qprod), annual feed distributed (Qannual_ feed), standing stock (Qstock), and daily feed distributed (Qdaily_ feed). ENV were calculated for LCA impact categories climate change, eutrophication and acidification. ENV were expressed per...
Tipo: Text
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00377/48778/49176.pdf
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Environmental impacts of genetic improvement of growth rate and feed conversion ratio in fish farming under rearing density and nitrogen output limitations ArchiMer
Besson, M.; Aubin, J.; Komen, H.; Poelman, M.; Quillet, E.; Vandeputte, Marc; Van Arendonk, J. A. M.; De Boer, I. J. M..
Today, fish farming faces an increasing demand in fish products, but also various environmental challenges. Genetic improvement in growth rate and feed conversion ratio is known to be an efficient way to increase production and increase efficiency in fish farming. The environmental consequences of genetic improvement in growth rate and feed conversion ratio, however, are unknown. In this study, we investigated the environmental consequences of genetic improvement in growth rate and feed conversion ratio in an African catfish farm, using Recirculating Aquaculture System (RAS). In RAS, total fish production of the farm is limited by rearing density or by the capacity to treat dissolved nitrogen. To evaluate the environmental consequences of genetic...
Tipo: Text Palavras-chave: Life cycle assessment; African catfish; Feed efficiency; Recirculating aquaculture system; Selection; Thermal growth coefficient.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00302/41355/40546.pdf
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Influence of water temperature on the economic value of growth rate in fish farming: The case of sea bass (Dicentrarchus labrax) cage farming in the Mediterranean ArchiMer
Besson, M.; Vandeputte, Marc; Van Arendonk, J. A. M.; Aubin, J.; De Boer, I. J. M.; Quillet, E.; Komen, H..
In sea cage farming, fish are exposed to seasonal variations of water temperature, and these variations can differ from one location to another. A small increase in water temperature does not only stimulate growth of the fish (until an optimal level) but also lowers dissolved oxygen concentration in water. Dissolved oxygen may then become a rearing constraint during the production cycle if the oxygen requirement of fish is higher than the supply. The impact of this constraint on production parameters (stocking density of cages and/or batch rotation) and thus on economic profit of a farm will depend on both local thermal regime and growth potential of the fish. Increased growth is one of the most important traits in a breeding objective to increase...
Tipo: Text Palavras-chave: Economic values; Bioeconomic model; Fish farming; Genetic improvement; Temperature; Thermal growth coefficient.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00332/44361/43964.pdf
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Moderate hypoxia or hyperoxia affect fillet yield and the proportion of red muscle in rainbow trout [Des niveaux d’oxygène proches de la normoxie modifient les rendements en filets et la proportion de muscle rouge chez la truite arc-en-ciel] Animal Physiology
Lefèvre, F.; Aubin, J.; Louis, W.; Labbé, L.; Bugeon, J..
Despite the common use of oxygen supplementation in fish farms to maintain oxygen level around normoxia, the long-term effects of this practice on zootechnical performance has been extensively described but there is a lack of data concerning fish quality. Rainbow trout were reared in freshwater, from 12 g to 400 g, at three oxygen levels (76 ± 4, 98 ± 14 and 117 ± 12% saturation, mean ± standard deviation) in order to assess the influence of long-term oxygen exposure on fish carcass quality traits in 2 m3 tanks. At the end of the 18 weeks experiment, no effect of oxygen level on fish weight and morphometric traits (condition factor, fish height and width) was observed. No significant effect of oxygen level was measured on carcass yield, viscero-somatic...
Tipo: Journal (Paginated) Palavras-chave: QP Physiology.
Ano: 2007 URL: http://phy043.tours.inra.fr:8080/archive/00000433/
Registros recuperados: 7
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