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Protein synthesis in gilthead sea bream: response to partial fishmeal replacement


Carter, CG and Mente, E and Katersky Barnes, RS and Nengas, I, Protein synthesis in gilthead sea bream: response to partial fishmeal replacement, The British Journal of Nutrition, 108, (12) pp. 2190-2197. ISSN 0007-1145 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 The Authors

DOI: doi:10.1017/S0007114512000426


The present study aimed to measure tissue protein synthesis in sea bream fed isonitrogenous diets that contained 63, 55 and 50%fishmeal; in the latter two diets, 16 and 27%of the fishmeal protein was replaced with plant protein. Over a 35 d period, there were no differences in feed intake, growth or feed efficiency among the three diets. Protein metabolism was then measured in the liver and white muscle tissue as rates of protein synthesis and as the capacity for protein synthesis before feeding (0 h) and at different times after feeding (448 h). Diet did not have a significant effect on protein synthesis or on the capacity for protein synthesis in either tissue. The capacity for protein synthesis was not affected by time after feeding, and overall mean values were 81.02 (SE 1.68) and 4.07 (SE 0.94) mgRNA/g protein for the liver and white muscle, respectively. Liver and white muscle fractional rates of protein synthesis were significantly higher at 48 h, intermediate at 12 h and were not different among pre-feeding (0 h), 24 and 48 h. Overall, the indices of protein metabolism measured at various times over 48 h following feeding were closely aligned with measurements of feeding, growth and growth efficiency established over a longer time scale.

Item Details

Item Type:Refereed Article
Keywords:protein synthesis, specific dynamic action, fishmeal replacement
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture crustaceans (excl. rock lobster and prawns)
UTAS Author:Carter, CG (Professor Chris Carter)
UTAS Author:Katersky Barnes, RS (Dr Robin Katersky Barnes)
ID Code:81636
Year Published:2012
Web of Science® Times Cited:11
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2012-12-20
Last Modified:2015-02-04
Downloads:2 View Download Statistics

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