Seaweed and Man

Buchholz, Cornelia; Krause, Gesche; Buck, Bela H.

doi:10.1007/978-3-642-28451-9_22

Cited by 73 publications

(53 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…alginic acid, laminarin, fucoidan) and contain bioactive substances (e.g. vitamins or polyphenols) that are known to affect animal health (Buchholz et al, 2012;Fleurence, 1999;Gupta and Abu-Ghannam, 2011;Holdt and Kraan, 2011;MacArtain et al, 2007). Macroalgae extracts containing alginic acids are reported to enhance growth performance in a variety of fish species (Ahmadifar et al, 2009;Heidarieh et al, 2011Heidarieh et al, , 2012Sheikhzadeh et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The effect of supplementation with polysaccharides, nucleotides, acidifiers and Bacillus strains in fish meal and soy bean based diets on growth performance in juvenile turbot (Scophthalmus maximus)

Fuchs¹,

Schmidt

Slater

et al. 2015

Aquaculture

View full text Add to dashboard Cite

The investigation and application of a wide range of dietary supplements, such as probiotics, prebiotic and other additives, are increasingly popular in aquaculture research and practice. To date few studies have attempted to quantify the value of commercially available additives in improving growth performance of juvenile turbot (Scophthalmus maximus) and in compensating potential growth reduction resulting from high levels of plant protein (PP) in carnivorous fish diets. Two experiments were conducted to investigate the effect of different active ingredients in diet additives on turbot. I) Five diets supplemented with (1) yeast b-glucan and mannan oligosaccharides (GM), (2) alginic acid from brown algal extracts (AC), (3) yeast nucleotides and RNA (NR), (4) potassium diformate (PDF) and (5) bacteria strains Bacillus subtilis and B. licheniformis (BS), containing fish meal (FM) as the only protein source, were fed to turbots (initial weight 48.8 g ± 5.2 g) over 112 days. II) Four diets supplemented with (1) GM, (2) AC, (3) NR and (4) BS, containing soy protein concentrate (SPC) and wheat gluten (WG) as a partial replacement of FM, were fed to turbots (initial weight 95.8 g ± 17.7 g) over 84 days. A non-supplemented FM diet (exp. I) and an FM-and PP-based diet (exp. II), respectively, were used as control diets. Diet additives did not promote additional weight gain, specific growth rate (SGR), daily feed intake (DFI) and feed conversion ratio (FCR) in turbot fed FM-or PP-based diets (p N 0.05) when compared to isocaloric control diets in both experiments. Growth of turbots fed the high FM content control diet (II) was significantly higher than all other treatments (p b 0.01). Body proximate composition, condition factor (K) and liver index (HSI) remained unaffected by additive supplementation in fish fed either FM or PP diets (p N 0.05). Results indicate that reported benefits for specific diet additives cannot be assumed to function or applied across species boundaries and age classes. In addition, dietary additive application may not be economically valid for larger animals and/or animals not exposed to specific culture-related stressors. The benefits of popular additives to high value species such as S. maximus remains to be tested under specific immune or physical stress situations and at crucial larval and early juvenile stages.

show abstract

Section: Introductionmentioning

confidence: 99%

The effect of supplementation with polysaccharides, nucleotides, acidifiers and Bacillus strains in fish meal and soy bean based diets on growth performance in juvenile turbot (Scophthalmus maximus)

Fuchs¹,

Schmidt

Slater

et al. 2015

Aquaculture

View full text Add to dashboard Cite

show abstract

“…Aquaculture is increasingly expanding in coastal waters, including landand sea-based cultures in both marine and brackish water environments. In addition to increasing conflicts with various inshore and nearshore stakeholder groups , aquaculture may have deleterious effects on coastal ecosystems, potentially jeopardizing further expansion of coastal aquaculture (Naylor et al, 2000;Naylor and Burke, 2005;Buchholz et al, 2012;Froehlich et al, 2017a).…”

Section: Introductionmentioning

confidence: 99%

State of the Art and Challenges for Offshore Integrated Multi-Trophic Aquaculture (IMTA)

et al. 2018

Self Cite

View full text Add to dashboard Cite

By moving away from coastal waters and hence reducing pressure on nearshore ecosystems, offshore aquaculture can be seen as a possible step towards the large-scale expansion of marine food production. Integrated multi-trophic aquaculture (IMTA) in nearshore water bodies has received increasing attention and could therefore play a role in the transfer of aquaculture operations to offshore areas. IMTA holds scope for multi-use of offshore areas and can bring environmental benefits from making use of waste products and transforming these into valuable co-products. Furthermore, they may act as alternative marine production systems and provide scope for alternative income options for coastal communities, e.g., by acting as nodes for farm operation and maintenance requirements. This paper summarizes the current state of knowledge on the implications of the exposed nature of offshore and open ocean sites on the biological, technological and socio-economic performance of IMTA. Of particular interest is improving knowledge about resource flows between integrated species in hydrodynamic challenging conditions that characterize offshore waters.

show abstract

“…In this contextual setting, Krause et al (2015) showed that most socio-economic analysis to date deal mainly with the effects of salmon or shrimp farming, and to a lesser extent with e.g. Pangasius and Tilapia, as well as filter feeders (such as Crassostrea gigas) and seaweeds (such as Kappaphycus alvarezii and K. striatum as well as Eucheuma denticulatum) (see Buanes et al 2004;Barton and Fløysand 2010;Fröcklin et al 2012;Stonich and Bailey 2000;Joyce and Satterfield 2010;Sievanen et al 2005;Buchholz et al 2012). In order to promote the sustainable co-existence of uses and, where applicable, the appropriate apportionment of relevant uses in the offshore realm, a framework should be put in place that consists at least of the establishment and implementation by Member States of maritime spatial planning, resulting in plans.…”

Section: Socio-economic Dimensions Of Aquaculture-a First Typologymentioning

confidence: 99%

The Socio-economic Dimensions of Offshore Aquaculture in a Multi-use Setting

Krause¹,

Mikkelsen

2017

Aquaculture Perspective of Multi-Use Sites in the Open Ocean

Self Cite

View full text Add to dashboard Cite

Decision-making within the marine realm is a complex process, which endorses ecological, societal and economic needs and they must therefore be managed jointly. Much of the formerly "free oceans" is nowadays subject to intensive uses, thus making the need to optimise the management of the resources within a multifunctional and multi-use(r) context apparent. The high competition for functions and uses of inshore and nearshore waters has given strong incentives to investigate the opportunities of moving industrial activities offshore. The current raise of offshore aquaculture is one prominent example of this. However, our understanding of the social dimensions and effects of offshore aquaculture is yet incomplete. We need to consider also how different multi-use settings for offshore aquaculture affect the socio-economic outcomes on various levels. During the development of offshore aquaculture, this multifunctional perspective has emerged especially for the combination with offshore wind farms. This synergy of two different stakeholders, the so-called multifunctional utilisation of marine areas, can be viewed as a new concept by the implementation of integrated, consensus-based resource planning conditions. We suggest a typology of social dimensions of marine aquaculture, based on the literature of "traditional" nearshore aquaculture. Based on this typology we discuss the current level of knowledge on the socio-economic dimensions of multi-use offshore aquaculture and point to further research needs.

show abstract

Seaweed and Man

Cited by 73 publications

References 54 publications

The effect of supplementation with polysaccharides, nucleotides, acidifiers and Bacillus strains in fish meal and soy bean based diets on growth performance in juvenile turbot (Scophthalmus maximus)

The effect of supplementation with polysaccharides, nucleotides, acidifiers and Bacillus strains in fish meal and soy bean based diets on growth performance in juvenile turbot (Scophthalmus maximus)

State of the Art and Challenges for Offshore Integrated Multi-Trophic Aquaculture (IMTA)

The Socio-economic Dimensions of Offshore Aquaculture in a Multi-use Setting

Contact Info

Product

Resources

About