Evaluation of microalgae as sources of digestible nutrients for monogastric animals

By A. Skrede, L. Mydland, Ø. Ahlstrøm, K. Reitan, H. Gislerød, M. Øverland. 2011

100 citations recorded by the source corpus.

The study was carried out to evaluate three microalgae as potential nutrient sources in diets for monogastric animals. In a digestibility experiment with adult mink (Mustela vison), the microalgae Nannochloropsis oceanica, Phaeodactylum tricornutum and Isochrysis galbana were fed at 60, 120 and 240 g kg -1 as is, replacing fish meal. The N. oceanica and P. tricornutum had similar crude protein (CP) content (47.7 and 49.0% of DM, respectively), amino acid composition and lipid content (8.4 and 7.4%, respectively), whereas I. galbana contained 20.1% CP and 16.2% lipids. There was a significant linear reduction in CP digestibility with increasing dietary inclusion of all algae products. The apparent CP digestibility determined by linear regression for N. oceanica, P. tricornutum and I. galbana was 35.5, 79.9 and 18.8%, respectively. The individual amino acid digestibilities showed acceptable values for P. tricornutum, but low and highly variable values for N. oceanica and I. galbana. Although the algae contributed a minor proportion of dietary lipids, lipid digestibility declined with increasing inclusion of all algae and especially with the highest level of N. oceanica. It was concluded from the mink study that among the investigated algae, P. tricornutum was the preferable source of digestible nutrients.

Subfields: Aquatic Science, Global and Planetary Change, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/6cf38b7e69a9e4bac497e375f33e74af95c1b9fc

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Aquatic Science

1. David Huyben
2. B. Glencross
3. J. Schrama
4. M. Shah
5. K. Reitan
6. M. Daroch
7. Yuan Liang
8. C. Parrish

In Global and Planetary Change

1. Ragnar Tveterås
2. K. Reitan
3. B. Glencross

In Renewable Energy, Sustainability and the Environment

1. M. Shah
2. M. Daroch
3. Yuan Liang

Citations in the corpus

• A techno-economic analysis of industrial production of marine microalgae as a source of EPA and DHA-rich raw material for aquafeed: Research challenges and possibilities (2015, background): “galbana, was estimated to be 36%, 80% and 19%, respectively (Skrede et al., 2011).”
• Microalgae in aquafeeds for a sustainable aquaculture industry (2018, background): “…aquaculture industry, such as the high production costs of microalgae (Becker 2007; Sarker et al., 2016a), some microalgae may have poorly digestible cell walls (Skrede et al. 2011), while the availability of a large amount of biomass could be affected by contamination (Hannon et al. 2010), etc.”
• The Application of Single-Cell Ingredients in Aquaculture Feeds—A Review (2020, background): “[35] found that inclusion of any of the three SCP (0, 60, 120 and 240 g/kg) had no negative effect on average feed intake, but that both Nannochloropsis and Isochrysis had a clear effect on protein digestibility, and Phaeodactylum less so.”