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An evaluation of the suitability of selected waste products in feeds for three fish species

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journal contribution
posted on 2002-01-01, 00:00 authored by Rasanthi Gunasekera, N Turoczy, S De Silva, F Gavine, G Gooley
Five types of aquatic food industry waste products (carp offal, carp roe, fish frames, trout offal and surimi processing waste) together with fish meal were evaluated for their suitability as potential fish meal replacements, partially or wholly, in diets for three species (rainbow trout, Murray cod and shortfin eel) cultured in Australia, using a number of criteria.

The proximate composition of the ingredients on a dry matter basis including protein content, lipid and ash, varied considerably. The essential amino acid (EAA) contents of the waste products and fish meal decreased in the order: carp roe > fish meal > carp offal > 'surimi' processing waste > fish frames > trout offal. The results of cluster analysis of A/E ratios of waste products and fish whole body fell within three clusters. The EAAI of whole body tissue of Murray cod, rainbow trout and Australian shortfin eel however, were closest to fish meal, followed by fish frame waste and/or 'surimi' waste. The results on A/E ratios and EAAI did not conform to the raw data on TAA and EAA. Therefore, the study emphasizes the need to have a multi-prong approach to determine the suitability of ingredients for incorporation into fish feeds.

History

Journal

Journal of aquatic food product technology

Volume

11

Issue

1

Pagination

57 - 78

Publisher

Haworth Press, Inc.

Location

Philadelphia, Pa.

ISSN

1049-8850

eISSN

1547-0636

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2002, Taylor & Francis