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| Registros recuperados: 128 | |
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| ANDRIOLI, A.; BRITO, I. F.. |
| Mudanças no conceito de visão do mundo das pessoas estão mudando devido à limitação dos recursos naturais, questões de origem ética sobre o bem-estar de animais, emergência e re-emergência de enfermidades e qualidade dos alimentos. A sociedade começou a se interessar mais em saber como seu alimento é produzido e exigir produtos que sejam ?limpos, verdes e éticos?, em que se preconiza o uso de práticas que minimizem ou evitem completamente tratamentos químicos ou hormonais nos animais e preservem, dessa forma, a saúde humana. Bem-estar é um termo amplo que inclui uma somatória de elementos que contribuem para a qualidade de vida do animal, levando-o a um bom estado de harmonia com o seu ambiente, caracterizado por condições físicas e fisiológicas adequadas.... |
| Tipo: Folhetos |
Palavras-chave: Welfare; Animal behaviour; Bem-estar; Comportamento animal; Ecologia animal. |
| Ano: 2009 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/748310 |
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| Roque D'Orbcastel, Emmanuelle; Person, Jeannine; Le Bayon, Nicolas; Blancheton, Jean-paul. |
| The objective of this study was to compare fish performance and welfare at different stocking densities in a recirculating system (RS) and a flow through system (FTS) under field conditions. During the 77 days experiment, the fish survival rate was high (99.3%) and stocking density increased from 57 to 98108 kg m(-3). No significant differences in growth were observed between RS and FTS until day 56. Later, growth decreased in the FTS, while it remained similar to the farm reference at 50 kg m(-3) in the RS. Final weight was 17% higher in RS than in FTS. The maximum carrying capacity of the RS was near 100 kg m(-3), limited by NO2 increase up to safe level at the end of the experiment, the maximum carrying capacity of the FTS was near 85 kg m(-3), probably... |
| Tipo: Text |
Palavras-chave: Welfare; Fin; Performance; Stocking density; Recirculating system. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6509.pdf |
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| Li, Xian; Przybyla, Cyrille; Triplet, Sebastien; Liu, Ying; Blancheton, Jean-paul. |
| The long term effects of moderate elevation ORP (oxidation–reduction potential) around 300–320 mV on the growth, hematological parameters and the ability of European seabass (Dicentrarchus labrax) to react against bacterial infection was studied in recirculating aquaculture systems (RASs). Two RASs, one with a moderate ozonation (RAS-O3) and a control (RAS-C) were used in this experiment. After 60 days, seabass reared in the RAS-O3 were more able to react against a Vibrio anguillarum infection. It was in spite of the fact that seabass in the RAS-O3 showed decreased feed intake, feed conversion rate, growth rate and modified hematological parameters compared with the fish in RAS-C. It is obvious that an ORP level of 300–320 mV is too high for seabass to... |
| Tipo: Text |
Palavras-chave: Oxidation–reduction potential; Seawater; European seabass; Welfare; RASs. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00244/35562/34132.pdf |
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| Millot, Sandie; Pean, Samuel; Leguay, Didier; Vergnet, Alain; Chatain, Beatrice; Begout, Marie-laure. |
| Among other strategies to improve fish welfare in rearing environment, domestication and/or selective breeding was proposed to minimize fish responsiveness to husbandry practices. To verify this hypothesis on a recently domesticated specie, the sea bass, Dicentrarchus labrax, L., an experiment was realized, using four populations differing according to their level of domestication or selection: one population produced from wild parents (Wild), one population produced from parents domesticated for one generation (Domesticated) and two produced from parents selected for growth for one generation (Selected A and Selected B). The experiment was carried out over 91 days with 600 fish (50 fish per tank, 150 fish per population). After a control period, the fish... |
| Tipo: Text |
Palavras-chave: Feed intake; Feeding rhythm; Specific growth rate; Adaptation capacities; Welfare. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00011/12254/9030.pdf |
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| Sammouth, Sophie; Roque D'Orbcastel, Emmanuelle; Gasset, Eric; Lemarie, Gilles; Breuil, Gilles; Marino, Giovanna; Coeurdacier, Jean-luc; Fivelstad, Sveinung; Blancheton, Jean-paul. |
| Sea bass (Dicentrarchus tabrax) (135 +/- 4 g) were reared under tank-based recirculating aquaculture system for a 63-day period at four densities: 10, 40, 70, 100 kg m(-3). Fish performance, stress indicators (plasma cortisol, proteonemia plus other blood parameters-Na+, K+, glucose, pH, total CO2- and water quality were monitored. At the end of the 63-day period, resistance to infection was also studied by a nodavirus challenge. A 25-day test was performed on fish from two extreme densities (10 and 100 kg m(3)) and one intermediate density (40 kg m(3)). With regards to the different density treatments, there was no significant difference between the daily feed intake (DFI) and the specific growth rate (SGR) up to a density of 70 kg m(-3). No significant... |
| Tipo: Text |
Palavras-chave: Welfare; Performance; European sea bass; Recirculating system; Density. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6761.pdf |
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| Person, Jeannine; Le Bayon, Nicolas. |
| This paper presents a non invasive, rapid and reliable way to quantitatively assess fin erosion in sea bass (Dicentrarchus labrax). The method is based on a visual assessment of fin profile and area loss of all fins except the anterior dorsal, on a scale from 0 to 4 in comparison with a perfect fin. The effects of stocking density (SD) and temperature on fin damage were investigated under experimental conditions (100-250 g fish). Over a 4-month period, mean erosion index (mean erosion level of all fins) was 10 times higher at 120 than at 20 kg m(-3), where most fins were undamaged. Damage was also dependent on time and oxygen concentration (35% lower at 53% O-2 saturation than at 105%). Fin condition was also affected by temperature: mean erosion index was... |
| Tipo: Text |
Palavras-chave: Rearing systems; Stocking density; Temperature; Welfare; Fin damage; Sea bass. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6873.pdf |
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| Alfonso, Sebastien; Sadoul, Bastien; Cousin, Xavier; Bégout, Marie-laure. |
| In aquaculture, fish are exposed to unavoidable stressors that can be detrimental for their health and welfare. However, welfare in farmed fish can be difficult to assess, and, so far, no standardized test has been universally accepted as a welfare indicator. This work contributes to the establishment of behavioural welfare indicators in a marine teleost in response to different water quality acute stressors. Groups of ten fish were exposed to high Total Ammonia Nitrogen concentration (High TAN, 18 mg.L-1), Hyperoxia (200 % O2 saturation), Hypoxia (20 % O2 saturation), or control water quality (100% O2 saturation and TAN < 2.5 mg.L-1) over 1 hour. Fish were then transferred in a novel environment for a group behaviour test under the same water quality... |
| Tipo: Text |
Palavras-chave: Fish; Welfare; Water quality; Behaviour; Stress. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00612/72399/71344.pdf |
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| Person, Jeannine; Labbe, Laurent; Le Bayon, Nicolas; Severe, Armelle; Le Roux, Annick; Le Delliou, Herve; Quemener, Loic. |
| An 84-day experiment assessed the combined effects of two fresh water quality levels (H: 1.71 +/- 0.15 mg O(2)l(-1) and 0.28 +/- 0.01 mg l(-1) total ammonia nitrogen (T-AN), L: 5.15 +/- 0.07 mg O2l(-1) and 0.54 +/- 0.01 mg T- AN l(-1)) and 3 stabilized stocking densities: 24.8 +/- 0.2, 74.2 +/- 0.5 and 120.0 +/- 0.9 kg m(-3)) on rainbow trout. Fish were fed using demand feeders with rewards proportional to stocking density. Mass increase was significantly affected by water quality and stocking density, being highest in H water and the lowest at 120 kg m(-3). There was no significant difference in final weight between 25 and 74 kg m(-3), but at 120 kg m(-3) it was 27% and 19% lower in H and L water respectively than at 25 kg m(-3). Feed intake (FI) from day... |
| Tipo: Text |
Palavras-chave: Growth; Welfare; Stocking density; Water quality; Rainbow trout. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4555.pdf |
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| Sadoul, Bastien; Geffroy, Benjamin. |
| Stress in teleosts is an increasingly studied topic because of its interaction with growth, reproduction, immune system and ultimately fitness of the animal. Whether it is for evaluating welfare in aquaculture, adaptive capacities in fish ecology, or to investigate effects of human‐induced rapid environmental change, new experimental methods to describe stress physiology in captive or wild fish have flourished. Cortisol has proven to be a reliable indicator of stress and is considered the major stress hormone. Initially principally measured in blood, cortisol measurement methods are now evolving towards lower invasiveness and to allow repeated measurements over time. We present an overview of recent achievements in the field of cortisol measurement in... |
| Tipo: Text |
Palavras-chave: Aquaculture; Cortisol; Glucocorticoids; Non-invasive; Stress; Welfare. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00478/59001/61616.pdf |
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| Millot, Sandie; Begout, Marie-laure; Person, Jeannine; Breuil, Gilles; Di Poi, C; Fievet, Julie; Pineau, Philippe; Roue, M; Severe, Armelle. |
| Feeding motivation is one major indicator of fish welfare and an investigation on the link between feed demand, growth and physiological variables in sea bass juveniles was developed. A computerized on-demand feeding system coupled with a PIT tag monitoring device was used to continuously record for 219 days the triggering activity of 150 individuals (initial average body weight 131.6 +/- 1.80 g and coefficient of variation 16.8%). Each group was held in 400 1 tanks at 22.2 +/- 1.5 degrees C and light regime was 16:8 LD. In all the tanks, 89% of the fish actuated the trigger, but only two or three fish accounted for 45% of the total triggering activity. These few high-triggering individuals had a transient higher growth i.e. at the time an individual was... |
| Tipo: Text |
Palavras-chave: Welfare; Social interaction; Growth; Feeding activity. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3738.pdf |
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| Varsamos, S; Flik, G; Pepin, Jean-francois; Bonga, S; Breuil, Gilles. |
| In aquaculture management it is important to establish objective criteria to assess health and welfare of the fish. Here we show that European sea bass (Dicentrarchus labrax) confronted with husbandry-associated stress (tank cleaning, i.e. scrubbing, and water temperature variation) during early life stages show poorer survival and disease resistance as juveniles. We evaluated several parameters for stress (plasma cortisol, glucose and lactate, hydromineral status), growth performance, the immune response (plasma IgM levels) and the effects of a nodavirus challenge. Principal component analysis allowed the establishment of a stress panel including plasma cortisol, osmolality, IgM levels and weight. Sea bass juveniles reared during early life in high and... |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax; Nodavirus challenge; Scrubbing; Temperature; Welfare; Health; Allostasis; Stress. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2395.pdf |
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| Mutondo, Joao E.; Brorsen, B. Wade; Henneberry, Shida Rastegari. |
| There is often a need to respond quickly to assess the likely implications of policy changes. Here, an equilibrium displacement model is adapted to study international bans on U.S. beef. An equilibrium displacement model offers a convenient way of quickly predicting the effects of supply and demand shocks. The equilibrium displacement model used here has an international sector, which allows the study of issues that past models with only a domestic sector could not. The estimated welfare loss of U.S. beef producers, due to both Japanese and South Korean bans after the discovery of bovine spongiform encephalopathy (BSE) in the United States, is $565.31 million. |
| Tipo: Journal Article |
Palavras-chave: Equilibrium displacement; International trade; Meat; Trade ban; Welfare; Marketing. |
| Ano: 2009 |
URL: http://purl.umn.edu/59236 |
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| Registros recuperados: 128 | |
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