The IMTA-cultivated Chlorophyta Ulva spp. as a sustainable ingredient in Nile tilapia (Oreochromis niloticus) diets

Marinho, Gonçalo Silva; Nunes, Cristina; Sousa-Pinto, Isabel; Pereira, Rui; Rema, Paulo; Valente, Luísa

doi:10.1007/s10811-012-9965-3

Cited by 66 publications

(40 citation statements)

References 46 publications

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“…Seaweeds with high protein content and production rates are receiving more attention as an alternative plant protein source (Fleurence 1999;Buschmann et al 2001;Marinho et al 2013). IMTA-produced seaweeds generally present higher productivity levels and less variability in protein content than seaweed from the natural environment due to the continuous supply of nutrients and the minimum disturbance by grazers or epiphytes (Schuenhoff et al 2003;Mata et al 2010;Abreu et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…were already studied as an ingredient for herbivorous aquatic animals (Dworjanyn et al 2007) and several fish species like European sea bass, Dicentrarchus labrax L. (Valente et al 2006), common carp, Cyprinus carpio L. (Diler et al 2007), Nile tilapia, Oreochromis niloticus L. Ergün et al 2009;Pereira et al 2012;Marinho et al 2013), and rainbow trout, Oncorhynchus mykiss Walbaum (Güroy et al 2011(Güroy et al , 2013. Moreover, according to Pereira et al (2012), Nile tilapia (O. niloticus) seems to digest and utilize better G. vermiculophylla, P. dioica, and Ulva spp.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of IMTA-produced seaweeds (Gracilaria, Porphyra, and Ulva) as dietary ingredients in Nile tilapia, Oreochromis niloticus L., juveniles. Effects on growth performance and gut histology

Silva¹,

Valente

Sousa-Pinto

et al. 2014

J Appl Phycol

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The present study evaluated the effects of the inclusion of three seaweeds, Gracilaria vermiculophylla (GRA), Porphyra dioica (POR), and Ulva spp. (ULV), as dietary ingredients for Nile tilapia (Oreochromis niloticus) juveniles, on the growth performance, body composition, and gut histology. Three experimental diets (GRA, POR, and ULV) were formulated to replace 10 % of whole diet by each of the three seaweeds. A control diet (CTRL) was used, without inclusion of any seaweed. Diets were fed to triplicate groups of 25 Nile tilapia juveniles, with an average body weight (ABW) of 12.1 g, in an 84-day trial. At the end of the trial, growth performance was significantly reduced (P<0.05) in fish fed the GRA diet, whereas the feed conversion ratio increased significantly in those fish. None of the treatments caused adverse effects on body composition. The inclusion of the three seaweeds in the diet led to evident changes in the fish digestive system morphology with significant reduction of villi length on GRA diet. The results obtained in this study suggest the usefulness of P. dioica and Ulva spp. to partially replace fishmeal in practical diets for tilapia juveniles up to 10 %, as no negative consequences on growth performance or body composition were observed. However, the inclusion of 10 % G. vermiculophylla seems to have a negative effect in diet palatability, reducing fish feed intake and growth performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of IMTA-produced seaweeds (Gracilaria, Porphyra, and Ulva) as dietary ingredients in Nile tilapia, Oreochromis niloticus L., juveniles. Effects on growth performance and gut histology

Silva¹,

Valente

Sousa-Pinto

et al. 2014

J Appl Phycol

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“…Many species of macroalgae are effective in removing nutrients from water and show a high potential for IMTA in RAS (HAYASHI et al, 2008;NEORI, 2008;MARINHO et al, 2013). Several studies have proven the efficiency of macroalgae in retaining nitrogen compounds derived from IMTA (NEORI et al, 2003;NEORI, 2008;COPERTINO et al, 2009;CRUZ-SUÁREZ et al, 2010;MARINHO et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have proven the efficiency of macroalgae in retaining nitrogen compounds derived from IMTA (NEORI et al, 2003;NEORI, 2008;COPERTINO et al, 2009;CRUZ-SUÁREZ et al, 2010;MARINHO et al, 2013). In addition, IMTA uses various industrial applications for algae (NEORI, 2008;BIXLER and PORSE, 2010) and these are recognized as a high-quality food and have traditionally been used as food and feed (FLEURENCE, 1999;FAO, 2014), especially in Asian countries (KUMAR et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Biofiltering efficiency and productive performance of macroalgae with potential for integrated multi-trophic Aquaculture (IMTA)

Castelar¹,

Pontes²,

Costa³

et al. 2015

Bol. Inst. Pesca

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Seaweeds have many uses in industry and agriculture and many species have potential for integrated multi-trophic aquaculture (IMTA), since they are efficient in removing nutrients from water. The efficiency of Ulva flexuosa, U. fasciata and Gracilaria birdiae in removing nutrients from enriched water and their productive performance in outdoor tanks were quantified. These seaweeds (50 g; n = 5) were grown in tanks containing 50 L of eutrophic seawater, with a salinity of 30, a temperature of 28.5 ± 2.8 °C, an irradiance of 547 ± 458 μmol photons m -2 s -1 and aeration. The nutrients levels were recorded daily and when total nitrogen removal was detected, the biomass was measured. After five days of cultivation, more than 98% of NH3 (H = 1.1; P = 0.56) and NO3 -(H = 2.7; P = 0.25) and 62.1% of PO4 3-(H = 0.0; P = 0.90) had been removed from the tanks. However, the mean daily growth rate (4.5 ± 2.5% day -1 ) and productivity (3.5 ± 1.9 g m -2 day -1 ) of U. fasciata and G. birdiae were higher than U. flexuosa (-13.6 ± 7.7% day -1 ; -6.24 ± 2.8 g m -2 day -1 ; P<0.01), demonstrating that microalga contamination by this species promoted high removal efficiency in the tanks, but a low productive performance. Based on these results, U. fasciata and G. birdiae show a greater potential for use in IMTA to improve water quality and produce biomass.Keywords: Gracilaria birdiae; productivity; daily growth rate; nutrient removal; Ulva fasciata; Ulva flexuosa EFICIÊNCIA BIOFILTRADORA E DESEMPENHO PRODUTIVO DE MACROALGAS COMPOTENCIAL PARA AQUICULTURA MULTI-TRÓFICA INTEGRADA (AMTI) RESUMOAs macroalgas são utilizadas em diversos setores industriais e agrícolas. Além disso, muitas espécies apresentam potencial para aquicultura multitrófica integrada (AMTI), pois são eficientes na remoção de nutrientes da água. A eficiência biofiltradora e desempenho produtivo das macroalgas Ulva flexuosa, U. fasciata e Gracilaria birdiae e foram quantificados em tanques outdoor. As algas (50 g; n = 5) foram cultivadas em tanques de 50 L, com água eutrofizada, salinidade 30 e temperatura média 28,3 °C. Os nutrientes foram monitorados diariamente e a biomassa foi mensurada assim que detectada a extinção do nitrogênio. Após cinco dias de cultivo, mais de 98% de NH3 (H = 1,1; P = 0,56) e de NO3 -(H = 2,7; P = 0,25) e 62,1% de PO4 3-(H = 0,0; P = 0,9) foram removidos dos tanques. Contudo, a taxa de crescimento (% dia -1 ) e a produtividade (g m -2 dia -1 ) de U. fasciata e de G. birdiae (4,5 ± 2,5% dia -1 ; 3,5 ± 1,9 g m -2 dia -1 ) foram superiores às de U. flexuosa (13,6 ± 7,7% dia -1 ; 6,2 ± 2,8; P<0,01), cuja contaminação por microalgas contribuiu para elevada eficiência de retirada nos tanques desta espécie, mas baixo desempenho produtivo. Desta forma, U. fasciata e G. birdiae foram indicadas para AMTI tanto para a manutenção da qualidade da água quanto para aproveitamento de biomassa.

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“…If instead of framing productivity in terms of per unit feed, we frame it in terms of per unit of fish meal or fish oil from wild fish stocks (biotic depletion), then the recycling of nitrogen lost to the environment back into marine proteins and lipids, and the subsequent reincorporation into fish feed, offers opportunities to increase the productivity in a way that may be meaningful to the farmer. The incorporation of seaweed into fin-fish aquafeeds has been shown to be possible at an experimental level (Wahbeh 1997, Yildirim et al 2009, Marinho et al 2013. As previously stated, an IMTA system with 100% efficiency in capturing nitrogen would allow for significant protein production using seaweed or mussels, but in addition, there is the potential for significant production of marine lipids.…”

Section: Increased Productivitymentioning

confidence: 99%

Going beyond the search for solutions: understanding trade-offs in European integrated multi-trophic aquaculture development

Hughes

Black²

2016

Aquacult. Environ. Interact.

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There has been significant interest in the development of integrated multi-trophic aquaculture (IMTA) in Europe. Much of this interest has come from academia and regulators, and while elements within the European aquaculture industry have expressed an interest, to date, the adoption of the concept has been limited. Part of the attraction for regulators and academics is the ecological/economic win/win that is associated with eco-innovation solutions. However, if we are to understand why there has been limited uptake of IMTA in Europe, perhaps it is necessary to look at the issue in terms of trade-offs for the individual farmer or company. Using this viewpoint, we investigate the balance of trade-offs for the individual farmer or company to diversify from a traditional fin-fish production business into an IMTA system. In doing so, we reveal that the balance of trade-offs is currently not sufficiently positive to motivate the large-scale uptake of IMTA in Europe, and we contrast this against the situation in Asia where the balance of trade-offs gives better support for the adoption and practice of IMTA. By better understanding the trade-offs for the individual, it is possible to better understand the conditions that will promote the development of IMTA in Europe.

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The IMTA-cultivated Chlorophyta Ulva spp. as a sustainable ingredient in Nile tilapia (Oreochromis niloticus) diets

Cited by 66 publications

References 46 publications

Evaluation of IMTA-produced seaweeds (Gracilaria, Porphyra, and Ulva) as dietary ingredients in Nile tilapia, Oreochromis niloticus L., juveniles. Effects on growth performance and gut histology

Evaluation of IMTA-produced seaweeds (Gracilaria, Porphyra, and Ulva) as dietary ingredients in Nile tilapia, Oreochromis niloticus L., juveniles. Effects on growth performance and gut histology

Biofiltering efficiency and productive performance of macroalgae with potential for integrated multi-trophic Aquaculture (IMTA)

Going beyond the search for solutions: understanding trade-offs in European integrated multi-trophic aquaculture development

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