Algae for Aquaculture and Animal Feeds

Shields, Robin; Lupatsch, I.

doi:10.14512/tatup.21.1.23

Cited by 67 publications

(49 citation statements)

References 34 publications

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“…In addition to their high nutritional value, micro-and macroalgae are gaining importance for the possibilities of extracting micro-feed ingredients (e.g. provitamins and minerals of high biological value) for the feed industry (Shields & Lupatsch 2012) and feeding animals with beneficial bioactive and nutraceutical compounds, which could be transferred into milk, meat and derived products for human nutrition.…”

Section: Sustainable Ruminant Feedingmentioning

confidence: 99%

Sustainable ruminant production to help feed the planet

Pulina

Francesconi

Stefanon

et al. 2016

Italian Journal of Animal Science

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Ruminant production has been an essential part of human activities worldwide since ancient times. The expected increase in world population and per capita income, with an increase in the amount and prevalence of animal products in human diet, urbanisation, with a concentration of population in urban areas and an increase in losses in the supply chain, and the growing concern over the environmental impact of animal farming require a long-term global strategy for a more intensive and sustainable ruminant production. Therefore, solutions to increase the supply of high-quality products of ruminant origin, without harming human health, animal welfare, and environment, should consider the following interconnected issues discussed in this review: (a) effects of meat, milk and dairy products consumption on human health, focussing on the imbalance caused by their insufficient consumption, and the alleged increased incidence of certain diseases due to their consumption; (b) importance of the sustainable intensification of ruminant production systems (e.g. better feed conversion and higher production output per unit of input introduced into the farming system); (c) environmental impact of ruminant production; (d) improvement of animal performance by improving animal welfare; (e) adaptation of ruminants to climate change; (f) sustainable ruminant feeding (e.g. precision feeding techniques, optimisation of grazing systems, and use of unconventional feeds); (g) challenges posed by production intensification to animal breeding and conservation of animal biodiversity; and (h) strategies to increase ruminant production in developing countries, thus achieving food security in vast areas of the planet affected by fast growth of human population

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Section: Sustainable Ruminant Feedingmentioning

confidence: 99%

Sustainable ruminant production to help feed the planet

Pulina

Francesconi

Stefanon

et al. 2016

Italian Journal of Animal Science

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“…Algae have been widely recognized for their capacity to produce polysaccharides, lipids, pigments and other valuable compounds in significant amounts (Wijffels and Barbosa, 2010). Algae are used for producing healthy food and food supplements, and as an ingredient in aquaculture, animal feed and as soil biofertilizer (Sharma et al, 2011;Shields and Lupatsch, 2012).…”

Section: Introductionmentioning

confidence: 99%

The effect of the algal microbiome on industrial production of microalgae

Lian

Wijffels

Smidt

et al. 2018

Microbial Biotechnology

121

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SummaryMicrobes are ubiquitously distributed, and they are also present in algae production systems. The algal microbiome is a pivotal part of the alga holobiont and has a key role in modulating algal populations in nature. However, there is a lack of knowledge on the role of bacteria in artificial systems ranging from laboratory flasks to industrial ponds. Coexisting microorganisms, and predominantly bacteria, are often regarded as contaminants in algal research, but recent studies manifested that many algal symbionts not only promote algal growth but also offer advantages in downstream processing. Because of the high expectations for microalgae in a bio‐based economy, better understanding of benefits and risks of algal–microbial associations is important for the algae industry. Reducing production cost may be through applying specific bacteria to enhance algae growth at large scale as well as through preventing the growth of a broad spectrum of algal pathogens. In this review, we highlight the latest studies of algae–microbial interactions and their underlying mechanisms, discuss advantages of large‐scale algal–bacterial cocultivation and extend such knowledge to a broad range of biotechnological applications.

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“…Microalgae have been used for rearing molluscs and zooplankton as well as larval stages of fish and crustaceans (Brown, Jeffrey, Volkman, & Dunstan, 1997). Furthermore, the favourable fatty acid and amino acid profiles of some microalgae species have spurred research on microalgae-incorporated feeds for farmed fish (Shields & Lupatsch, 2012;Skrede et al, 2011). The growth and protein utilization of tilapia and gilthead sea bream fed on feeds with 200 g and 400 g/ kg diet of Spirulina sp.…”

Section: Introductionmentioning

confidence: 99%

Digestibility of the defatted microalgae Nannochloropsis sp. and Desmodesmus sp. when fed to Atlantic salmon, Salmo salar

et al. 2017

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The aim of the study was to investigate the apparent digestibility coefficient (ADC) of defatted biomass derived from microalgae Nannochloropsis sp. and Desmodesmus sp. when fed to Atlantic salmon postsmolts in seawater. Two experiments, one employing cold-pelleted and the other employing extruded pellets, were carried out to determine the ADC of dry matter (DM), protein, ash and energy. The test feeds consisted of a fishmeal-based reference feed and the algal biomass, at a ratio of 70:30, and yttrium oxide as the inert marker. The ADC of DM and protein in fish fed microalgaeincorporated cold-pelleted feeds were significantly higher for Nannochloropsis sp. compared with Desmodesmus sp. The Nannochloropsis sp. inclusion in extruded feeds also led to higher ADCs of DM and energy compared with Desmodesmus sp. The extrusion processing significantly increased the ADC of ash in both defatted microalgae biomass, as well as ADCs of DM in Nannochloropsis and protein in Desmodesmus sp. In conclusion, the microalga Nannochloropsis sp. was more digestible than Desmodesmus sp., and extrusion processing can be used as a means to improve digestibility of certain nutrients.

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Algae for Aquaculture and Animal Feeds

Cited by 67 publications

References 34 publications

Sustainable ruminant production to help feed the planet

Sustainable ruminant production to help feed the planet

The effect of the algal microbiome on industrial production of microalgae

Digestibility of the defatted microalgae Nannochloropsis sp. and Desmodesmus sp. when fed to Atlantic salmon, Salmo salar

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