Stress and the welfare of cultured fish

Conte, Fred S.

doi:10.1016/j.applanim.2004.02.003

Cited by 427 publications

(361 citation statements)

References 34 publications

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“…Other water quality parameters, in addition to oxygen levels, have been shown to affect swimming behaviour. These include low water pH levels (Day and Butler 1996), increased ammonia levels (Shingles et al 2001), carbon dioxide exposure (Conte 2004) and trace element exposure (Hopkins et al 2003).…”

Section: Individual Swimming Behaviourmentioning

confidence: 99%

Behavioural indicators of welfare in farmed fish

Martins¹,

Galhardo²,

Noble³

et al. 2011

Current Views on Fish Welfare

120

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Behaviour represents a reaction to the environment as fish perceive it and is therefore a key element of fish welfare. This review summarises the main findings on how behavioural changes have been used to assess welfare in farmed fish, using both functional and feeling-based approaches. Changes in foraging behaviour, ventilatory activity, aggression, individual and group swimming behaviour, stereotypic and abnormal behaviour have been linked with acute and chronic stressors in aquaculture and can therefore be regarded as likely indicators of poor welfare. On the contrary, measurements of exploratory behaviour, feed anticipatory activity and rewardrelated operant behaviour are beginning to be considered as indicators of positive emotions and welfare in

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Section: Individual Swimming Behaviourmentioning

confidence: 99%

Behavioural indicators of welfare in farmed fish

Martins¹,

Galhardo²,

Noble³

et al. 2011

Current Views on Fish Welfare

120

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“…There is extensive literature on the physiological responses of fish to a wide variety of acute and chronic stressors [2,[11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Haematological and Immunological Responses in Juvenile Sea Bass (Dicentrarchus labrax L.) After Short-Term Acute Stress

Maricchiolo¹,

Caruso²,

Genovese³

2008

TOFISHSJ

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Abstract:The physiological effects of acute stress (induced by an intraperitoneal injection) on the haematocrit, haemoglobin, serum cortisol and glucose, haemagglutinins and lysozyme were investigated in juvenile sea bass Dicentrarchus labrax. A total of 40 fish were subjected to an intraperitoneal injection. Eight fish were sampled at 0, 2, 4, 24 and 48 h after acute stress and compared to unstressed fish (controls) sacrificed at the same times. Intraperitoneal injection resulted in significant changes in cortisol and glucose 4 and 2 hours after exposure to stress, respectively, but not in haematocrit and haemoglobin levels. No significant differences between stressed and control fish were recorded for lysozyme content and haemagglutinating activity throughout the experiment. In juvenile sea bass acute stress caused by intraperitoneal injection was mostly associated with the increase in common stress indicators (cortisol and glucose), while no clear response in terms of non-specific immune parameters was evidenced.

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“…Water quality and fish density must be controlled. Fish are usually starved for about 24 h prior to harvest and transport so that they do not void faeces and foul the transport water (Conte, 2004). Excretory products, mucus and regurgitated food also degrade the water quality.…”

mentioning

confidence: 99%

The effect of transport on biochemical and haematological indices of common carp (Cyprinus carpio L.)

Dobšíková¹,

Svobodová²,

Blahová³

et al. 2009

Czech J. Anim. Sci.

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ABSTRACT:The effect of 12 h transport on the biochemical and haematological profiles of three-years-old common carp was investigated. There was a significant increase (P < 0.01) in ammonia, chloride, phosphorus, lactate dehydrogenase, aspartate aminotransferase and creatine kinase, and a significant decrease (P < 0.05) in total proteins. The levels of glucose (P < 0.01), lactate (P < 0.05), alanine aminotransferase (P < 0.01) and calcium (P < 0.01) were also significantly changed, but no time-dependent relationships were found. Significant increases in haematocrit (P < 0.01) and metamyelocyte count (P < 0.05) were found. Mean corpuscular volume (P < 0.05) and counts of monocytes (P < 0.01), band neutrophils (P < 0.01) and segmented neutrophils (P < 0.05) were significantly changed independently of the transport duration. Since pre-transport manipulation and transport per se were found to be important stressors for three-years-old common carp, peri-transport disturbances should be minimized to ensure optimal fish welfare.Keywords: erythrocyte profile; common carp; Cyprinus carpio; leukocyte profile; plasma biochemical indices; stress response 511Czech J. Anim. Sci., 54, 2009 (11): 510-518 Original Paper of adrenalin and cortisol, followed by secondary changes in blood and tissues, such as hyperglycaemia, hyperlactaemia, hypercholesterolaemia, changes in blood plasma enzyme activities and ion concentrations, reduced glycogen content of muscle and liver, increased metabolic rate, and shifts in haematological profiles and immunological capacity (Stave and Robertson, 1985; Staurnes et al.1994).The acute primary physiological response of fish to netting, handling and transport returns to normal levels within 6-24 h. However, physiological recovery may take 10-14 days if the stressors persist and are not lethal (Schreck et al., 1997). Stress and physical activity during transport usually lead to the loss of product quality, such as reducing fish freshness, softening muscle texture, and lowering filet yield. Exposure to stress can have an impact on the economics of fish aquaculture (Nakayama et al., 1994).The aim of this study was to assess a transport stress response, i.e. the effect of pre-transport manipulation procedures and long-distance transport per se, to some biochemical and haematological indices of three-years-old common carp, Cyprinus carpio (L). Transport water quality was also monitored. MATERIAL AND METHODSThe experiment was carried out on common carp transported from storage ponds of the commercial fish farm in Hluboká nad Vltavou (Czech Republic) via Brno (Czech Republic) to a fish pond in Boheľov (Slovakia). Fish were transported in 2.2 m 3 transport tanks (AGK Kronawitter GmbH, Germany), at a density of 364 kg body weight per m 3 .Duration of transport was 12.5 h, comprising 7 h from Hluboká nad Vltavou to Brno and 5.5 h from Brno to Boheľov. Tanks were continuously oxygenated during transport. In Boheľov, the carp were released from the tanks through a hose into a fish pond. Throughout the experim...

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Stress and the welfare of cultured fish

Cited by 427 publications

References 34 publications

Behavioural indicators of welfare in farmed fish

Behavioural indicators of welfare in farmed fish

Haematological and Immunological Responses in Juvenile Sea Bass (Dicentrarchus labrax L.) After Short-Term Acute Stress

The effect of transport on biochemical and haematological indices of common carp (Cyprinus carpio L.)

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