Effects of rearing density on sea bass (<i>Dicentrarchus labrax</i>) biological performance, blood parameters and disease resistance in a flow through system

D’Orbcastel, Emmanuelle Roque; Lemarié, Gilles; Breuil, Gilles; Petochi, T.; Marino, G.; Triplet, Sébastien; Dutto, Gilbert; Fivelstad, Sveinung; Coeurdacier, Jean Luc; Blancheton, Jean-Paul

doi:10.1051/alr/2009056

Cited by 27 publications

(18 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Feeding the fish once daily does not seem to have effected overall growth in LMB. Similar feeding methods are reported for LMB (Petit et al ) and for feeding other predacious fish such as sea bass, Dicentrarchus labrax (Sammouth et al ; d'Orbcastel et al ).…”

Section: Resultsmentioning

confidence: 60%

Evaluation of Stocking Density during Second‐Year Growth of Largemouth Bass, Micropterus salmoides, Raised Indoors in a Recirculating Aquaculture System

Watts

Bright

Coyle

et al. 2016

J World Aquaculture Soc

View full text Add to dashboard Cite

Largemouth bass (LMB), Micropterus salmoides, are a highly desirable food fish especially among Asian populations in large cities throughout North America. The primary production method for food‐size LMB (>500 g) has been outdoor ponds that require two growing seasons (18 mo). Indoor, controlled‐environment production using recirculating aquaculture system (RAS) technologies could potentially reduce the growout period by maintaining ideal temperatures year‐round. Researchers conducted a 26‐wk study to evaluate optimal stocking densities for growout of second‐year LMB to food‐fish size in an indoor RAS. LMB fingerlings (112.0 ± 38.0 g) were randomly stocked into nine 900‐L tanks to achieve densities of 30, 60, or 120 fish/m3 with three replicate tanks per density. The RAS consisted of a 3000‐L sump, ¼ hp pump, bead filter for solids removal, mixed‐moving‐bed biofilter for nitrification, and a 400‐watt ultraviolet light for sterilization. Fish were fed a commercially available floating diet (45% protein and 16% lipid) once daily to apparent satiation. At harvest, all fish were counted, individually weighed, and measured. Total biomass densities significantly increased (P ≤ 0.05) with stocking rate achieving 6.2, 13.2, and 22.9 kg/m3 for fish stocked at 20, 60, and 120 fish/m3, respectively. The stocking densities evaluated had no significant impact (P > 0.05) on survival, average harvest weight, or feed conversion ratio which averaged 92.9 ± 5.8%, 294.5 ± 21.1 g, and 1.8 ± 0.3, respectively. After approximately 6 mo of culture, LMB did not attain target weights of >500 g. Observed competition among fish likely resulted in large size variability and overall poor growth compared to second‐year growth in ponds. Additional research is needed to better assess the suitability of LMB for culture in RAS.

show abstract

Section: Resultsmentioning

confidence: 60%

Evaluation of Stocking Density during Second‐Year Growth of Largemouth Bass, Micropterus salmoides, Raised Indoors in a Recirculating Aquaculture System

Watts

Bright

Coyle

et al. 2016

J World Aquaculture Soc

View full text Add to dashboard Cite

show abstract

“…It was found to decrease in "potential crowding" (Sutton et al 2000); the conditions in this other experiment were different from those in our own, however (modification of the flow rate and water parameters). For the present experiment on density, several hypothesis can be put forward: (i) TSP decrease starts but is compensated by the end of the experiment, as previously observed after TSP decrease due to stress (Coeurdacier and Dutto 1999;El-Gohary et al 2005); (ii) Stocking density has no influence on TSP, but modifies swimming behaviour, affects feed intake, growth and blood pCO 2 and HCO 3 (Sammouth et al 2008;Roque d'Orbcastel et al 2010), as already reported for several blood components in sea bass (Vazzana et al 2002). In similar experimental conditions to the present ones, an effect on the level of gene expression was found (Gornati et al 2004).…”

Section: Discussionmentioning

confidence: 63%

“…Their full details and subsequent results are described in Sammouth et al (2008), Taranger (2008) and Roque d'Orbcastel et al (2010). For the transfer and nodavirus injection treatments, the general conditions of rearing and monitoring are the same.…”

Section: Methodsmentioning

confidence: 99%

“…Data concerning hyperoxia, hypercapnia and crowding have already been examined in order to investigate the impact of each stressful situation on health and welfare (Taranger 2008;Sammouth et al 2008;Roque d'Orbcastel et al 2010). In this previous work, the fish reared with the highest oxygen level treatment (250 HP: tanks at 230−250% O 2 saturation 16.4−17.8 mg L −1 with a total gas pressure at 230 mm Hg) were the most affected, with mortalities of 10 to 15% fish/tank, Article published by EDP Sciences a clearer body colour than control fish and irregular greyishwhite patches at the bases of the dorsal, caudal and pectoral fins.…”

Section: Introductionmentioning

confidence: 99%

“…The study suggested that only high stocking density (100 kg m −3 ) had a negative effect. Complete information from this study is published elsewhere (Taranger 2008;Sammouth et al 2008;Roque d'Orbcastel et al 2010).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Is total serum protein a good indicator for welfare in reared sea bass (Dicentrarchus labrax)?

Coeurdacier

Dutto

Gasset

et al. 2011

Aquat. Living Resour.

Self Cite

View full text Add to dashboard Cite

-Reared sea bass were submitted to six stressful situations: hyperoxia with or without hypercapnia, increased stocking density in an open flow or recirculating system, transfer to another tank and nodavirus injection. The potentially negative impact of these factors on the lives of sea bass was investigated by measuring 9 water parameters and 19 fish parameters including total serum protein (TSP). TSP has already been used to evaluate stress. The present study investigates data of previous and new experiments, concentrating on the potential use of TSP as a routine indicator to assess welfare in sea bass reared on fish farms. In the current experiment, oxygen and carbon dioxide were seen to affect levels of TSP, but alterations were too erratic to enable proper comparison, probably because they are normal components of the fish environment and become toxic only by dose increase. TSP decreased when stocking density increased. After transfer to another tank, TSP decreased to 14% for three weeks and then increased during the fourth week through compensative overproduction, before returning to normal levels after 2 months. The results confirmed that transfer is an important stress factor for fish, with cumulative effects for successive transfers. TSP alteration of nodavirus-injected fish depends on the type of symptoms, which can be divided into 3 groups: (i) dying fish, in which TSP increased sharply due to over-production of protein involved in non-specific defences and inflammation, then decreased dramatically before death; (ii) whirling fish, a group that included both fish that later died, in which TSP decreased, and fish that subsequently survived, in which TSP increased due to development of specific immunity; and (iii) asymptomatic fish, in which TPS was similar to control levels and which were probably insensitive to nodavirus and/or had developed defences. In this paper, different mechanisms of TSP alteration are proposed and the interest of TSP as a field parameter is discussed. TSP is a non-destructive parameter that is robust, easy to measure everywhere and cheap, representing a suitable way of monitoring the overall welfare of fish by its regular increase. It can be used only as a "warning" of poor rearing conditions, however, and further investigations would be needed to identify the specific stress or health disorder.

show abstract

Welfare Issues and Veterinary Treatments

Lembo¹,

Carbonara²,

Fabris³

et al. 2019

Organic Aquaculture

View full text Add to dashboard Cite

Effects of rearing density on sea bass (Dicentrarchus labrax) biological performance, blood parameters and disease resistance in a flow through system

Cited by 27 publications

References 43 publications

Evaluation of Stocking Density during Second‐Year Growth of Largemouth Bass, Micropterus salmoides, Raised Indoors in a Recirculating Aquaculture System

Evaluation of Stocking Density during Second‐Year Growth of Largemouth Bass, Micropterus salmoides, Raised Indoors in a Recirculating Aquaculture System

Is total serum protein a good indicator for welfare in reared sea bass (Dicentrarchus labrax)?

Welfare Issues and Veterinary Treatments

Contact Info

Product

Resources

About