Site Details: Skelwick Skerry

Unit 3 Quarry Road
Pierowall Westray
KW17 2DH
Operator: Cooke Aquaculture Scotland Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

East Skelwick Production cycle end date: Aug 2019
Total losses: 1.3 %

East Skelwick Production cycle end date: Oct 2020
Total losses: 1.1 %

East Skelwick Production cycle end date: Oct 2021
Total losses: 6.8 %

East Skelwick Production cycle end date: Oct 2022
Total losses: 10.6 %

East Skelwick Production cycle end date: Sep 2023
Total losses: 47.3 %

East Skelwick Production cycle end date: Oct 2024
Total losses: 21.9 %

Source

Fish Health Inspectorate mortality

Date:
09/01/23-15/01/23
Mortality:
3,704
Mortality Rate:
2.28%
Reason given: Gill Heath/Handling
Gill Heath/Handling
First report this cycle. Business correspondant contacted and mortality levels have dropped below reporting levels for wk 3. FHI to monitor.

Date:
28/08/23-03/09/23
Mortality:
1,548
Mortality Rate:
1.04%
Reason given: Viral Disease
Viral Disease
CMS identified. Site is currently being harvested out.
Business correspondent contacted. FHI to monitor.

Date:
08/09/23-14/09/23
Mortality:
1,563
Mortality Rate:
1.27%
Reason given: Gill Health+CMS
Gill Health+CMS
Site to be fallow by October. FHI to monitor.

Date:
11/09/23-17/09/23
Mortality:
1,908
Mortality Rate:
2.20%
Reason given: Gill Health+CMS
Gill Health+CMS
Site to be fallow by October. FHI to monitor.

Date:
23/09/24-29/09/24
Mortality:
874
Mortality Rate:
1.17%
Reason given: Environmental
Environmental
Mortality levels below 1% for week 40
First report this cycle. FHI to monitor.

Date:
14/10/24-20/10/24
Mortality:
681
Mortality Rate:
1.39%
Reason given: Environmental
Environmental
Site being harvested. Business contacted: Site currently anticipated to fallow December 2024. Subject to change.
Bussiness contacted for additional information. FHI to monitor.

Source

Inspection reports

Case Number: 2022-0102


Download
Normally, Skelwick Skerry is the grower site, as the other sites around Westray are nursery sites. Stock is usually transferred onto site at 1.6-3kg until harvest size. Fish have been graded at Bay of Cleat (North) onto the wellboat and then transferred to
Skelwick.
Mortality is uplifted by the Foover and taken in mort bins to pier on Westray. Mort bins are taken to dounebay were they are tran
Skelwick Skerry is not remote fed, due to its offshore location. Feed blower on work boats conduct the feeding instead.
Due to windy weather and wave height, only 4 pens were fully walked around and inspected. The other 4 were viewed from the
Remote inspection conducted by on 13/05/2022, supervised by
Site inspection conducted by on 17/05/2022, supervised by .
VMD samples taken on 17/05/2022 by supervised by . [Original PDF]

Case Number: 2024-0145


Download
A visit is being conducted at Skelwick Skerry after receiving notification from the company that positive BKD results have been found by a Pharmaq vet carrying out routine inspections. At the time of notification (two weeks prior to the visit on 8th May), no raised mortality was observed on site.
External vet (Pharmaq routine visit for upcoming harvest) had one positive result for BKD when sampling last week (sampled only 4 moribund fish). This fish had some clinical signs - granulomas on spleen and this is why it was tested for BKD. Staff on site have been vigilant for BKD since Chalmers Hope outbreak and have not been seeing any signs of clinical disease when looking at moribunds etc.
Mortalities are now going to be sent by separate bulker - in line with what is done at Chalmers Hope. No mortality movements have been done since site got positive result. Mortalities are removed by ROV on site and delivered to Dounby Yard in their own tanker which will then be disinfected completely.
Fish have been on site since January and have come on from Bay of Cleat North (FS1080) and Vestness (FS1210).
Mortality - Week 20 mortality had 445 fish down as 'environmental mortality' - PGD, jellyfish, plankton. Since the movement restriction order was put in place last week no mortality uplifting has taken place on site until the mortality movement SOP has been put in place.
Mortality since last visit - very low, rarely above 1, in the last cycle the mortality only increased above 1 in the last 3 weeks of the cycle shortly before fallowing. These mortality were mainly attributed to heart disease and handling.
Fish are organic and have had no treatments other than freshwater or T.M.S for health checks.
Health wise - AGD when fish first came on to site and were transported in freshwater. Little bit of PGD and gill bleeding. Few fish with sores observed but these are determined to likely be from seals trying to grab them through the net.
Health report - Internal health report 7th May 2024 - routine inspection "fish are looking in good condition and appear to be feeding well. Environmental damage observed as well as some gill bleeding. AGD 0-1 non AGD (PGD) 0-4"
Increased plankton counts over the last 4/5 weeks but not high enough to stop feeding.
Inspection of site: All eight pens were inspected. Despite no uplift of mortality for a few days, no dead fish were seen floating on the surface of the water. Due to the overcast day and dark waters, it was difficult to observe fish. Fish seen just below the water surface or jumping from the water appeared healthy, a good weight and with no clinical signs of disease. Across the whole farm only 2 fish were observed to be of poor health. One fish in pen 5 had a 2 inch sized facial lesion (top of head missing and exophthalmic eyes) - staff tried netting the fish out however the fish swam off quickly when approached. It will be removed if staff are able to catch it.
A moribund fish was observed in pen 3 swimming slowly with a weak body condition (runt looking), an exophthalmic eye, had a higher lice load and was easily caught with the hand net. A one fish diagnostic of this fish was taken. Upon inspecting the fish internally, no clinical signs of disease were observed. There was still a bit of fat surrounding the pyloric caeca and spleen however no food was observed in the hind gut. [Original PDF]

Case Number: 2024-0148


Download
IDN placed following information from business about suspicion of BKD. 16/05/2024. FHI to visit w/c 20/05/2024.
No report issued with this case type [Original PDF]

Source