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Use of ultrasonic extraction in determining apparent digestibility in fish feed

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Abstract

The feeds supplied to farmed fish should be rich in protein and minerals, such as animal protein, but more expensive alternatives comprising vegetable protein have emerged in recent years. However, the minerals essential to the proper development of fish must be assessed. To determine whether the minerals supplied in the diet are being fully exploited, the equation of the apparent digestibility coefficient is typically used with an external marker such as chromium. Moreover, the concentrations of the metals of interest are usually obtained using an acid digestion in the digester block; however, this digestion is harmful to both the analyst and the environment. An alternative to this digestion is described in this work. Four types of feeds were made with different types of protein substitutes.

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Acknowledgments

The authors thank FAPESP—Fundação de Amparo a Pesquisa do Estado de São Paulo—Process No 2008/51377-9 for financial support.

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Author notes

  1. Bruna Cavecci

    Present address: Department of Chemistry and Biochemistry, Institute of Bioscience, São Paulo State University (UNESP), Rubião Junior District, Botucatu, São Paulo, 18618-970, Brazil

Authors and Affiliations

  1. Department of Chemistry and Biochemistry, Institute of Bioscience, São Paulo State University (UNESP), Rubião Junior District, Botucatu, São Paulo, 18618-970, Brazil

    José Cavalcante Souza Vieira, Camila Pereira Braga & Pedro Magalhães de Padilha

  2. College of Veterinary and Animal Science, São Paulo State University, Botucatu, São Paulo, Brazil

    Paula Monteiro de Lima, João Vitor de Queiroz & Alis Correia Bittarello

Authors
  1. Bruna Cavecci
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  2. Paula Monteiro de Lima
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  3. José Cavalcante Souza Vieira
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  4. Camila Pereira Braga
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  5. João Vitor de Queiroz
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  6. Alis Correia Bittarello
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  7. Pedro Magalhães de Padilha
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Corresponding author

Correspondence to Bruna Cavecci.

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Cavecci, B., de Lima, P.M., Vieira, J.C.S. et al. Use of ultrasonic extraction in determining apparent digestibility in fish feed. Food Measure 9, 599–603 (2015). https://doi.org/10.1007/s11694-015-9269-9

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  • DOI: https://doi.org/10.1007/s11694-015-9269-9

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