Site Details: South Cava

Lyness
Hoy
Orkney
KW16 3NT
Operator: Cooke Aquaculture Scotland Ltd
Water type: Seawater

Average female lice per fish

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Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

South Cava Production cycle end date: Jul 2018
Total losses: 13 %

South Cava Production cycle end date: Jul 2019
Total losses: 15.5 %

South Cava Production cycle end date: Jun 2020
Total losses: 3.6 %

South Cava Production cycle end date: May 2021
Total losses: 16.1 %

South Cava Production cycle end date: Jul 2022
Total losses: 6.8 %

South Cava Production cycle end date: Jun 2023
Total losses: 32 %

South Cava Production cycle end date: Jun 2024
Total losses: 17.6 %

South Cava Production cycle end date: May 2025
Total losses: 14.6 %

Source

Fish Health Inspectorate mortality

Date:
03/10/22-09/10/22
Mortality:
8,676
Mortality Rate:
1.67%
Reason given: Jellyfish/Gill Damage
Jellyfish/Gill Damage
First report this cycle. FHI to monitor
Date:
10/10/22-16/10/22
Mortality:
11,347
Mortality Rate:
2.24%
Reason given: Jellyfish/Gill Damage
Jellyfish/Gill Damage
Numbers increased slightly from previous week. FHI to monitor.
Date:
24/10/22-30/10/22
Mortality:
7,030
Mortality Rate:
1.43%
Reason given: Jellyfish/Gill Damage
Jellyfish/Gill Damage
Business correspondent contacted for further info. Mortalities have decreased in week 44. FHI to monitor.
Date:
07/11/22-13/11/22
Mortality:
7,741
Mortality Rate:
1.61%
Reason given: Jellyfish/Gill Damage
Jellyfish/Gill Damage
Continuation of mortalities previously reported, FW treatment planned for the end of the this week. Current mortality levels not known as weather is hampering access to the site. FHI to monitor.
Date:
28/11/22-04/12/22
Mortality:
12,211
Mortality Rate:
2.61%
Reason given: Gill Damage
Gill Damage
Freshwater treatments currently ongoing. FHI to monitor.
Date:
05/12/22-11/12/22
Mortality:
9,770
Mortality Rate:
2.14%
Reason given: Gill Damage
Gill Damage
Gill issues are improving with the colder weather. Mortality decreasing from previous week. FHI to monitor.
Date:
26/12/22-01/01/23
Mortality:
6,089
Mortality Rate:
1.38%
Reason given: Viral Disease/Gill Damage
Viral Disease/Gill Damage
Business correspondent contacted. Mortality has reduced from previous week. CMS has been identified on site. FHI to monitor.
Date:
09/01/23-15/01/23
Mortality:
7,505
Mortality Rate:
1.73%
Reason given: Gill Health/Viral disease
Gill Health/Viral disease
8th report in current cycle. Mortality levels raising just above reporting level then drop before raising again. CMS identified on site. Business correspondant contacted and mortality levels remain above reporting levels for wk 3. FHI planned visit wb 06/02.
Date:
22/01/23-29/01/23
Mortality:
4,177
Mortality Rate:
1.01%
Reason given: Gill Health/Viral disease
Gill Health/Viral disease
Gill Health/Viral disease
Site contacted for further information. CMS is the main cause of mortality at present, the site are currently harvesting the worst affected pens. The site previously experianced a gill insult from a plankton bloom, the site was treated with FW just before christmas and the gills seem to have recovered well. Hydrolicer treatment scheduled for next week. FHI to visit w/b 06/02/2023.
Date:
30/01/23-05/02/23
Mortality:
3,843
Mortality Rate:
1.04%
Reason given: Gill Health/ Viral Disease
Gill Health/ Viral Disease
Business correspondent contacted. Gill issues are related to the previous jellyfish issues they've had on site. CMS on site. Site is currently harvesting out the affected fish. Site visited w/b 06/02/2023. FHI to monitor.

Source

Inspection reports

Case Number: 2020-0013


Download Some runts observed in several cages.
Most cages with seal pro netting, although no issues with seal interaction.
No sea lice issues. All fish sampled for VMD had zero lice. [Original PDF]

Case Number: 2023-0032


Download Rumbling mortalities recorded through wk 44 2021 to wk 11 2022 all below reporting threshold, recorded as 'other' (poor doers) , heart disease (CMS) and also IPN, well below reporting thresholds. 2022 wk 18 1737 (0.77%) recorded as heart disease (CMS) peaks in 2022, wk 40 1.69%( 8676) CMS, gill health, plankton/jellyfish, environmental. wk41 2.24%(11347) gill health, CMS.
Wk 43 1.43% (7030) CMS, gill health and jellyfish/plankton, wk 45 1.61% (7741) CMS, gill health and jellyfish/plankton, wk 48
2.61% (12211) CMS, gill health and jellyfish/plankton, wk 49 2.14% (9770) CMS, gill health and jellyfish/plankton, wk 52
1.38%(6089) CMS, gill health.
Peaks 2023 wk 2 1.73% (7505) CMS,gill health, Wk 3 1.01%(4177) CMS, gill health.
Targeted harvesting is ongoing at the site to reduce biomass on the CMS effected cages. CMS affected stock specific to fish from Shin.
AGD FW treatment on 24/11/2022 all pens treated by 4/12/2022
Hydrolicer treatment planned
Some runts observed in each cage, two fish observed with rubbing likely the result of being crowded for harvest. Strong feeding response in pens sampled for VMD with fish sampled in good condition with zero lice burden. [Original PDF]

Case Number: 2023-0365


Download Stock on site from Pegal Bay and Kirk Noust. (Stofnfiskur and Aquagen stock). Site transferred fish on in Wk30 2023.
Organic site.
Hydrolicer treatment conducted in March 2023, before end of crop (previous production cycle fallowed wk 24). Fish transferred from Pegal via FW.
Only T.M.S used so far on site as a medicinal treatment.
Site was inspected following confirmation of BKD at Chalmer's Hope, which is within one tidal excursion for inspected site. The purpose of the inspection was to determined whether any fish were presenting with signs of clinical BKD. No fish were seen with signs of clinical BKD.
During site inspection, it was difficult to see the fish as water was dark and fish lower down in the water column. Two moribund fish were observed on the day of the inspection. These were removed and sampled for diagnostics. [Original PDF]

Source