The effect of organic and conventional production methods on sea bream growth, health and body composition: a field experiment

Mente, Eleni; Stratakos, Alexandros Ch.; Boziaris, Ioannis S.; Kormas, Konstantinos Ar.; Karalazos, Vasileios; Karapanagiotidis, Ioannis Τ.; Catsiki, Vassiliki A.; Leondiadis, Leondios

doi:10.3989/scimar.03411.07c

Cited by 20 publications

(20 citation statements)

References 46 publications

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“…Nevertheless, the production rate of dissolved and particulate nitrogenous waste by farmed salmon has been estimated (Davies 2000; Mente et al, 2006). Recently, the high or low sea bream ( Sparus aurata ) density in aquaculture cages was suggested to cause significant differences in bacterial cell numbers in response to higher or lower amounts of excreted material from the fish (Mente et al, 2012). The development of commercial rearing facilities that are in line with advances in research for optimal culture conditions will facilitate the further growth of sustainable ornamental aquaculture.…”

Section: Discussionmentioning

confidence: 99%

Changes of bacterioplankton apparent species richness in two ornamental fish aquaria

et al. 2013

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We analysed the 16S rRNA gene diversity within the bacterioplankton community in the water column of the ornamental fish Pterophyllum scalare and Archocentrus nigrofasciatus aquaria during a 60-day growth experiment in order to detect any dominant bacterial species and their possible association with the rearing organisms. The basic physical and chemical parameters remained stable but the bacterial community at 0, 30 and 60 days showed marked differences in bacterial cell abundance and diversity. We found high species richness but no dominant phylotypes were detected. Only few of the phylotypes were found in more than one time point per treatment and always with low relative abundance. The majority of the common phylotypes belonged to the Proteobacteria phylum and were closely related to Acinetobacter junii, Pseudomonas sp., Nevskia ramosa, Vogesella perlucida, Chitinomonas taiwanensis, Acidovorax sp., Pelomonas saccharophila and the rest belonged to the α-Proteobacteria, Bacteroidetes, Actinobacteria, candidate division OP11 and one unaffiliated group. Several of these phylotypes were closely related to known taxa including Sphingopyxis chilensis, Flexibacter aurantiacus subsp. excathedrus and Mycobacterium sp. Despite the high phylogenetic diversity most of the inferred ecophysiological roles of the found phylotypes are related to nitrogen metabolism, a key process for fish aquaria.Electronic supplementary materialThe online version of this article (doi:10.1186/2193-1801-2-66) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Changes of bacterioplankton apparent species richness in two ornamental fish aquaria

et al. 2013

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“…), can result in quality changes that are then difficult to trace to a particular cause. For instance, the work of Mente et al (2012), one of the few available studies with gilthead seabream, showed that organically produced seabream had higher growth, moisture and protein content and lower muscle lipid content. However, the higher growth can be a result of the lower stocking densities used or of the quality of the organic feed.…”

Section: Farming Practices: Stressful Events At Slaughtermentioning

confidence: 99%

Sustainability vs. Quality in gilthead seabream (Sparus aurata L.) farming: are trade‐offs inevitable?

Matos¹,

Dias

Dinis

et al. 2016

Reviews in Aquaculture

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European aquaculture industry should be at the forefront of sustainable development, providing healthy and safe food of the highest quality to the consumer, through an environmentally sound approach. The purpose of this review was to explore in what way the current drive for sustainability has affected what the consumer perceives as quality in fish, specifically in gilthead seabream, one of the most important farmed species in the Mediterranean. It focuses on nutritional aspects such as fish meal and fish oil replacement, quality tailoring through finishing strategies, the influence of different farming systems and the effect of slaughter stress on seabream quality. In general, fish meal and fish oil replacement with vegetable ingredients will result in changes in the fatty acid profile of the fillets, and consequently the potential health benefits seabream offers to the consumer. While organoleptic properties suffer little change, the impact of these ingredients on welfare has not been fully investigated. Further studies are also needed to evaluate the effect of land animal ingredients on seabream quality. In either case, although finishing strategies to restore essential fatty acids are not completely effective, seabream can still retain a high nutritional value. Information on the use of dietary supplements as finishing strategies is still extremely scarce. Regarding fish welfare, the high densities practised in intensive production systems pose concerns which warrant further research in this area. Furthermore, new alternatives for common harvesting and slaughter methods are needed to improve welfare, as traditional methods are clearly stressful.

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“…Nevertheless, the ratio of n-3 to n-6 polyunsaturated fatty acids was significantly higher in organic than in conventional fish. MENTE et al (2012) studied the effect of organic and conventional production methods on gilthead sea bream (Sparus aurata L.) specimens, from 10 g to 350 g (commercial size) in sea cages. The gilthead sea bream specimens were kept at densities of 4 kg/m 3 (organic) and 15 kg/m 3 (conventional) and were fed with organic food (45% crude protein, 14% fat) or conventional feed (46% crude protein, 17% fat).…”

Section: Introductionmentioning

confidence: 99%

The influence of organic versus conventional feeding on the growth and survival of gilthead sea bream Sparus aurata L. juveniles

Ayala¹,

García-Saorín²,

Martínez-Torres³

et al. 2019

Vet. arhiv

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Sparus aurata specimens of 11 months of age (mean weight: 90.2 g, mean length: 18.3 cm) were classified in two diet groups: one control group was fed with conventional diet, and one experimental group was fed with an organic diet. The body and muscle parameters were studied at 0, 41 and 71 days of the experiment. The results showed the highest values of body length and weight as well as the best biological feed conversion rates in the organic group. The transverse area of white muscle, the hyperplasia and the muscle fibres density were also higher in the organic than in the conventional group (P>0.05). In contrast, hypertrophy was greater in the conventional than in the organic group (P<0.05). Survival was 100% in both groups. In conclusion, the organic feeding regime was more favourable for growth than conventional feeding.

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The effect of organic and conventional production methods on sea bream growth, health and body composition: a field experiment

Cited by 20 publications

References 46 publications

Changes of bacterioplankton apparent species richness in two ornamental fish aquaria

Changes of bacterioplankton apparent species richness in two ornamental fish aquaria

Sustainability vs. Quality in gilthead seabream (Sparus aurata L.) farming: are trade‐offs inevitable?

The influence of organic versus conventional feeding on the growth and survival of gilthead sea bream Sparus aurata L. juveniles

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