Acid silage of tuna viscera: production, composition, quality and digestibility

Authors

  • Jorge Filipe BANZE Universidade Federal de Santa Catarina (UFSC), Centro de Ciências Agrárias, Departamento de Aquicultura
  • Maria Fernanda Oliveira da SILVA Universidade Federal de Santa Catarina (UFSC), Centro de Ciências Agrárias, Departamento de Aquicultura
  • Dariane Beatriz Schoffen ENKE Universidade Estadual Paulista Júlio de Mesquita Filho(UNESP), Campus Experimental de Registro http://orcid.org/0000-0002-9463-7680 (unauthenticated)
  • Débora Machado FRACALOSSI Universidade Federal de Santa Catarina (UFSC), Centro de Ciências Agrárias, Departamento de Aquicultura http://orcid.org/0000-0002-2575-9027 (unauthenticated)

DOI:

https://doi.org/10.20950/1678-2305.2017.24.34

Keywords:

fish waste, hydrolysis, protein solubility, Rhamdia quelen

Abstract

Fish waste processed in the form of silage may constitute an alternative to the use of fishmeal (FM). In this study, the composition and quality of the acid silage produced from tuna viscera (TV) were characterized and the digestibility of the nutrients of this product was determined for jundia Rhamdia quelen, using ytrium oxide as an inert marker and a completely randomized design. At the end of thirty days, 61.74% of the crude protein of TV was solubilized. Acid silage from TV presented good nutritional composition (high protein, good amino acid profile and essential fatty acids) and good microbiological quality. Crude protein digestibility was similar (88.52%) for TV and FM, but dry matter digestibility was higher (P<0.05) for (TV) (92.20%). Tuna silage presented a high nutritional quality and nutrient digestibility for jundiá juveniles, R. quelen. Therefore, this novel ingredient has potential as an alternative protein source in aquafeeds.

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Published

2017-12-27

Issue

Vol. 43 No. Especial (2017): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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