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Istituto di scienza dell'alimentazione

Torna all'elenco Contributi in atti di convegno anno 2010

Contributo in atti di convegno

Tipo: Contributo in atti di convegno

Titolo: Cherax albidus Juveniles Fed Polysaccharide-Based Pellets: Rheological Behavior and Effect on Growth

Anno di pubblicazione: 2010

Formato: Cartaceo

Autori: Elena Coccia; Gabriella Santagata; Mario Malinconico; Maria Grazia Volpe; Michele Di Stasio; Marina Paolucci

Affiliazioni autori: Faculty of Sciences, Department of Biological and Environmental Sciences, University of Sannio, Via Port'Arsa, 11, 82100 Benevento, Italy. ICTP-CNR Via Campi Flegrei 34, 80078 Pozzuoli (Na), Italy. sa ISA-CNR Via Roma 52, 83100 Avellino, Italy. Faculty of Sciences, Department of Biological and Environmental Sciences, University of Sannio, Via Port'Arsa, 11, 82100 Benevento, Italy.

Autori CNR:

  • MICHELE DI STASIO
  • MARIO MALINCONICO
  • GABRIELLA SANTAGATA
  • MARIA GRAZIA VOLPE

Lingua: inglese

Abstract: In this study two algal polysaccharides, alginate and agar, chitosan from chitin, and one fruit extracted polysaccharide, pectin, have been used as binders to make solid pellets to be employed in intensive crayfish farming. We examined the performance of the pellets in water and their effect on crayfish growth. The kinetics of water absorption and solute leaching of the pellets were measured for up to 24 h. Recovered liquid was analyzed for the release of particles in water by a Low Angle Laser Light Scattering Technique. The pellets were stable in water up to 24 h, although the water stability of pectin based pellets and chitosan based pellets was greater than other pellets. At the same time, crayfish feeding response to each pellet type was monitored in growth experiments by testing diets containing similar concentrations of nutrients (proteins, lipids and carbohydrates) mixed with each of the different polysaccharides. The presence of polysaccharides positively affected crayfish growth. Indeed, animals fed these pellets showed a higher percentage growth when compared to control animals. The simple methodology used for making pellets, and the encouraging results obtained in this study, could be considered suitable parameters for people interested in crayfish farming under intensive conditions. [Keywords.-- aquaculture; Cherax albidus; food pellets; polysaccharides; rheological characteristics].

Lingua abstract: inglese

Pagine da: 13

Pagine a: 18

Rivista:

Freshwater crayfish International Association of Astacology
Paese di pubblicazione:
Lingua: inglese
ISSN: 2076-4324

Numero volume: 17

N. volume della serie/collana: 17

ISBN: 978-951-27-1322-6

Referee: Ś: Internazionale

Congresso nome: Seventeenth International Symposium on Freshwater Crayfish

Congresso luogo: Kuopio, FINLAND

Congresso data: 4 - 8 August, 2008

Congresso rilevanza: Internazionale

Congresso relazione: Su invito

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