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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 (>19°C) whereas there were
no differences in growth or FCR. ΔCV weight showed the individual growth trajectories were closer at 21°C.
Pre-selected individuals showed wide variation in performance (Phase 2), individuals with condition factor of >1.2 were compared at 15 and 21°C. After more than 46 days at an elevated temperature (>19°C) 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.
Pre-selected individuals showed wide variation in performance (Phase 2), individuals with condition factor of >1.2 were compared at 15 and 21°C. After more than 46 days at an elevated temperature (>19°C) 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 |
| 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: | 2016-07-22 |
| Downloads: | 0 |
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