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Abstract

Feed efficiency, the relative ability to convert feed nutrients into growth, is an important factor in the primary production of animals. Farming fish with improved feed efficiency is necessary to reduce production costs and achieve sustainability for the aquaculture industry. Proteomics provides an approach to discover biochemical mechanisms driving feed efficiency. To do this, we have evaluated the proteomic profile of liver and white muscle in efficient (EFF) and inefficient (INEFF) Chinook salmon (Oncorhynchus tshawytscha). Twenty-six fish, 14 EFF and 12 INEFF individuals, were assessed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) and a data-independent acquisition method. In total, 2433 liver and 635 white muscle proteins were quantified across all samples. Bioinformatics showed enrichment of gene ontology (GO) terms related to lipid metabolism in liver of EFF fish (~30% of total GO terms). Protein metabolism (~30% of total GO terms) were the top enriched pathways in white muscle of EFF fish. In INEFF fish, protein processing in endoplasmic reticulum and proteolysis (~40% of total GO terms) were the highest enriched GO terms in the liver. This is the first study to compare feed efficient and inefficient individuals at the proteomic level in an aquatic species and the results provide a preliminary insight into the fundamental molecular landscape of feed efficiency in Chinook salmon.

Item Type:	Article
Authors/Creators:	Esmaeili, M and Carter, CG and Wilson, R and Walker, SP and Miller, MR and Bridle, A and Symonds, JE
Keywords:	growth, growth efficiency, proteomics, genetic selection, chinook salmon, efficent fish
Journal or Publication Title:	Aquaculture
Publisher:	Elsevier Science Bv
ISSN:	0044-8486
DOI / ID Number:	https://doi.org/10.1016/j.aquaculture.2021.736855
Copyright Information:	© 2021 Elsevier B.V. All rights reserved.
Related URLs:	Google Scholar: Carter, CG UTAS Profile: Carter, CG Google Scholar: Wilson, R UTAS Profile: Wilson, R Google Scholar: Bridle, A UTAS Profile: Bridle, A
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