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Feeding and nutrition of pre-harvest Atlantic salmon in seawater RAS at four temperatures

Citation

Carter, CG and Hilder, PE and Codabaccus, BM and Grunenwald, M and Adams, LR and Nuez-Ortin, WG, Feeding and nutrition of pre-harvest Atlantic salmon in seawater RAS at four temperatures, 17th International Symposium on Feeding and Nutrition of Fish, 05-10 June 2016, Idaho, USA (2016) [Conference Extract]


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Abstract

As water temperature increased (Phase 1) feed intake was higher at elevated temperatures (>19C) whereas there were no differences in growth or FCR. ΔCV weight showed the individual growth trajectories were closer at 21C.

Pre-selected individuals showed wide variation in performance (Phase 2), individuals with condition factor of >1.2 were compared at 15 and 21C. After more than 46 days at an elevated temperature (>19C) there were few significant differences across growth, condition or muscle lipid. This indicated a level of robustness in a sub-group of salmon.

However, the performance of these more robust salmon was declining.

Large Tasmanian Atlantic salmon held at elevated temperatures (with 100% DO) in RAS declined in performance but continued to feed and grow for at least 7 weeks. Pigmentation appeared the most sensitive parameter measured.

Item Details

Item Type:Conference Extract
Keywords:Atlantic salmon, climate change, temperature, RAS
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:Carter, CG (Professor Chris Carter)
Author:Hilder, PE (Mrs Polly Hilder)
Author:Codabaccus, BM (Dr Basseer Codabaccus)
Author:Grunenwald, M (Mr Martin Grunenwald)
Author:Adams, LR (Dr Louise Adams)
Author:Nuez-Ortin, WG (Mr Waldo Nuez Ortin)
ID Code:110249
Year Published:2016
Deposited By:Centre for Fisheries and Aquaculture
Deposited On:2016-07-21
Last Modified:2016-07-22
Downloads:0

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