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


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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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, 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:Fisheries - aquaculture not elsewhere classified
UTAS Author:Carter, CG (Professor Chris Carter)
UTAS Author:Hilder, PE (Mrs Polly Hilder)
UTAS Author:Codabaccus, BM (Dr Basseer Codabaccus)
UTAS Author:Grunenwald, M (Dr Martin Grunenwald)
UTAS Author:Adams, LR (Dr Louise Adams)
UTAS Author:Nuez-Ortin, WG (Mr Waldo Nuez Ortin)
ID Code:110249
Year Published:2016
Deposited By:Fisheries and Aquaculture
Deposited On:2016-07-21
Last Modified:2022-03-17

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