Northwest Fisheries Science Center

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Document Type: Journal Article
Center: NWFSC
Document ID: 8242
Title: Effects of Sustainable Diets from Fish Trim Waste on Growth Performance of Juvenile Sablefish (Anopoploma fimbria)
Author: Peter Nicklason, Houguo Xu, Ronald Johnson, Frank Sommers, Lisa Armbruster
Publication Year: 2016
Journal: The Israeli Journal of Aquaculture Bamidgeh
Volume: 68
Pages: 1-11
DOI: IJA.1296.2016
Keywords: sustainability,feed,FIFO
Abstract:

A feeding trial was conducted to investigate the use of alternative fish feeds produced from fish trim waste in high plant protein diets for juvenile sablefish (Anopoploma fimbria). Fish meal in the control diet (CD) was replaced by low molecular weight hydrolysate (LMWH) protein from Pacific whiting (Merluccius productus) processing waste or by Atlantic salmon (Salmo salar) processing trim (ST), which was processed into the feed with an experimental heated ball mill. The feeding trial was conducted in an indoor recirculating seawater system and each feed was randomly assigned to triplicate groups of 50 fish with an average initial body weight of 57.5 g. The results showed that compared to the control diet, the diets containing LMWH or ST significantly increased the feed consumption and fish weight gain. Group ST showed a significantly higher weight gain than group LMWH. The ST feed, but not the LMWH feed, had a significantly lower feed conversion ratio than the CD feed. The ST feed increased the lipid retention efficiency and the lipid content in whole body tissue. These results demonstrate that the salmon fish trim waste and enzyme hydrolyzed whiting trim can increase the performance of high plant protein diets for sablefish.

Theme: Recovery and rebuilding of marine and coastal species
Foci: Evaluate the effects of artificial propagation on recovery, rebuilding and sustainability of marine and anadromous species.