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Microalgae from Biorefinery as Potential Protein Source for Siberian Sturgeon ( A. baerii ) Aquafeed

Author

Listed:
  • Tiziana Bongiorno

    (Istituto Sperimentale Italiano L. Spallanzani—Loc. La Quercia, 26027 Rivolta d’Adda (CR), Italy)

  • Luciano Foglio

    (Istituto Sperimentale Italiano L. Spallanzani—Loc. La Quercia, 26027 Rivolta d’Adda (CR), Italy)

  • Lorenzo Proietti

    (Istituto Sperimentale Italiano L. Spallanzani—Loc. La Quercia, 26027 Rivolta d’Adda (CR), Italy)

  • Mauro Vasconi

    (Department of Veterinary Medicine, University of Milan, 26900 Lodi, Italy)

  • Annalaura Lopez

    (Department of Veterinary Medicine, University of Milan, 26900 Lodi, Italy)

  • Andrea Pizzera

    (Department of Civil and Environmental Engineering, Polytechnic University of Milan, 20133 Milano, Italy)

  • Domenico Carminati

    (Council for Agricultural Research and Economics, Research Centre for Animal Production and Aquaculture (CREA-ZA), 26900 Lodi, Italy)

  • Aldo Tava

    (Council for Agricultural Research and Economics, Research Centre for Animal Production and Aquaculture (CREA-ZA), 26900 Lodi, Italy)

  • Antonio Jesús Vizcaíno

    (Department of Biology and Geology, Ceimar-University of Almería, 04120 Almería, Spain)

  • Francisco Javier Alarcón

    (Department of Biology and Geology, Ceimar-University of Almería, 04120 Almería, Spain)

  • Elena Ficara

    (Department of Civil and Environmental Engineering, Polytechnic University of Milan, 20133 Milano, Italy)

  • Katia Parati

    (Istituto Sperimentale Italiano L. Spallanzani—Loc. La Quercia, 26027 Rivolta d’Adda (CR), Italy)

Abstract

The demand for aquafeed is expected to increase in the coming years and new ingredients will be needed to compensate for the low fish meal and oil availability. Microalgae represent a promising matrix for the future aquafeed formulation, however, the high production cost hinders its application. The use of microalgae from biorefinery would reduce the disposal costs for microalgae production. The present study aimed to (i) verify the growth of microalgae on digestate coming from pig farming and (ii) evaluate their potential valorization as dietary ingredient in aquafeed according to a Circular Bioeconomy approach. For these purposes, a microalgae biomass was produced on an outdoor raceway reactor supplied with digestate and used for partial replacement (10% of the diet) in aquafeed for Siberian sturgeon fingerlings ( Acipenser baerii ). The results obtained confirm the feasibility for growing microalgae on digestate with satisfactory productivity (6.2 gDM m −2 d −1 ), nutrient removal efficiency and Chemical Oxygen Demand reduction; moreover, the feeding trial carried out showed similar results between experimental and control groups ( p > 0.05), in term of growth performance, somatic indices, fillet nutritional composition and intestinal functionality, to indicate that microalgae from biorefinery could be used as protein source in Siberian sturgeon aquafeed.

Suggested Citation

  • Tiziana Bongiorno & Luciano Foglio & Lorenzo Proietti & Mauro Vasconi & Annalaura Lopez & Andrea Pizzera & Domenico Carminati & Aldo Tava & Antonio Jesús Vizcaíno & Francisco Javier Alarcón & Elena Fi, 2020. "Microalgae from Biorefinery as Potential Protein Source for Siberian Sturgeon ( A. baerii ) Aquafeed," Sustainability, MDPI, vol. 12(21), pages 1-18, October.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:21:p:8779-:d:433123
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    References listed on IDEAS

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    1. Christien Enzing & Matthias Ploeg & Maria Barbosa & Lolke Sijtsma, 2014. "Microalgae-based products for the food and feed sector: an outlook for Europe," JRC Research Reports JRC85709, Joint Research Centre.
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    Cited by:

    1. G. Venkatesh, 2022. "Circular Bio-economy—Paradigm for the Future: Systematic Review of Scientific Journal Publications from 2015 to 2021," Circular Economy and Sustainability, Springer, vol. 2(1), pages 231-279, March.

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