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A preliminary study on growth and protein synthesis of juvenile barramundi, Lates calcarifer at different temperatures

Citation

Katersky, RS and Carter, CG, A preliminary study on growth and protein synthesis of juvenile barramundi, Lates calcarifer at different temperatures, Aquaculture, 267, (1-4) pp. 157-164. ISSN 0044-8486 (2007) [Refereed Article]

DOI: doi:10.1016/j.aquaculture.2007.02.043

Abstract

Temperature is recognized to be the most important environmental factor affecting growth and protein synthesis in fish. The optimal temperature for growth of juvenile barramundi is 31 C, although culture often occurs at temperatures which are above and below this optimum. Juveniles (2.96  0.46 g) were held at five different temperatures ranging from 21 to 33 C at 3 C intervals. Fish were fed to satiation twice daily (504.5 g kg− 1 crude protein, 190.5 g kg− 1 lipid, 128.5 g kg− 1 ash, and 20.2 GE MJ kg− 1). Daily feed intake (g), growth (% d− 1), growth efficiency, and protein synthesis (measured 24 h after feeding) were determined for each temperature. Feed intake was significantly higher at 33 C, than at any other temperature. Growth and growth efficiency were not significantly different between the 27, 30 and 33 C groups but were significantly higher than the 21 and 24 C groups. In order to take account of the variation in protein synthesis over the 24 h following feeding and model daily protein turnover, daily rates of protein synthesis were estimated from previously determined relationships between white muscle and whole body rates of protein synthesis. This showed that protein synthesis was not significantly different between 27 and 33 C, synthesis retention efficiency was over 40% at these temperatures, and at 21 C growth efficiency was poor. Growth efficiency and protein metabolism were optimal over a temperature from 27 to 33 C.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:Katersky, RS (Dr Robin Katersky Barnes)
Author:Carter, CG (Professor Chris Carter)
ID Code:48927
Year Published:2007
Web of Science® Times Cited:23
Deposited By:TAFI - Aquaculture
Deposited On:2007-08-01
Last Modified:2015-11-26
Downloads:0

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