Site Details: Seaforth

The Old Ruin
Maaruig
HS3 3AG
Operator: Mowi Scotland Ltd
Water type: Seawater

Average female lice per fish

Source

Salmon Scotland mortality

Source

Cumulative mortality over full production cycle

Seaforth Production cycle end date: Jun 2018
Total losses: 10.4 %

Noster Production cycle end date: Jun 2018
Total losses: 16.2 %

Noster Production cycle end date: Oct 2018
Total losses: 10 %

Seaforth Production cycle end date: Nov 2018
Total losses: 11.3 %

Seaforth Production cycle end date: Jul 2020
Total losses: 23.2 %

Noster Production cycle end date: Jul 2020
Total losses: 23.2 %

Seaforth Production cycle end date: Sep 2022
Total losses: 38.1 %

Noster Production cycle end date: Sep 2022
Total losses: 52.9 %

Noster Production cycle end date: Jul 2024
Total losses: 58.7 %

Source

Fish Health Inspectorate mortality

Date:
03/01/22-09/01/22
Mortality:
50,689
Mortality Rate:
2.95%
Reason given: Pasteurella skyensis infection
Pasteurella skyensis infection
Fish are being medicated with antibiotics.
PSI conducted on 06/01/2022 - antibiotic treatment being implemented to treat P.skyensis. Mortality reduced in week following (10/01/2022), to 1.62%. FHI to contact company later in the week to acess situation.
Date:
10/01/22-16/01/22
Mortality:
42,645
Mortality Rate:
2.56%
Reason given: Pasteurella skyensis infection / Mechanical treatment losses
Pasteurella skyensis infection / Mechanical treatment losses
PSI conducted on 06/01/2022 - antibiotic treatment being implemented to treat P.skyensis. Mortality reduced in week following (17/01/2022), to 1.62%. FHI to visit site wb 31/01/2022
Date:
17/01/22-23/01/22
Mortality:
48,880
Mortality Rate:
2.79%
Reason given: Mechanical treatment losses / Pasteurella skyensis infection
Mechanical treatment losses / Pasteurella skyensis infection
Continuation of the issues that have affected the site since November 2021. P.skyensis and gill health issues the main cause. Antibiotucs have been admionistered however mortalities remain high. Site to be inspected w/b 14/02/22. FHI to monitor.
Date:
14/02/22-20/02/22
Mortality:
20,051
Mortality Rate:
1.30%
Reason given: Pasteurella
Pasteurella
Site visited last week, post treatment mortality from thermolicer observed on site. Fish have been treated with antibiotics, company is hopeful this will further reduce mortality. FHI to monitor.
Date:
01/08/22-07/08/22
Mortality:
22,904
Mortality Rate:
2.31%
Reason given: CMS
CMS
week 8/8/22 Mon to Thurs 0.85%
First report over the reporting threshold since Feb. FHI to monitor
Date:
08/08/22-14/08/22
Mortality:
13,884
Mortality Rate:
1.53%
Reason given: CMS
CMS
week15/8/22 Mon to Wed 0.77%
2nd report since Feb. Morts have come down from last week. FHI to monitor
Date:
15/08/22-21/08/22
Mortality:
16,651
Mortality Rate:
2.07%
Reason given: CMS
CMS
Mortality rate has increased in following week to 3.17%.
Harvesting ongoing, site due to be fallow by 12th Sept.
Date:
22/08/22-28/08/22
Mortality:
19,994
Mortality Rate:
3.17%
Reason given: CMS
CMS
Mortality is currently 1.45% for the week commencing 29/08/2022.
Harvesting ongoing, site due to be fallow by 12th Sept.
Date:
29/08/22-04/09/22
Mortality:
13,709
Mortality Rate:
3.01%
Reason given: CMS
CMS
Site planned to be fallowed by 13th September
Site due to fallow 13/9/22
Date:
05/09/22-11/09/22
Mortality:
4,728
Mortality Rate:
1.76%
Reason given: CMS
CMS
Site planned to be fallow by 18th Sep
Site fallow
Date:
12/09/22-18/09/22
Mortality:
1,425
Mortality Rate:
1.09%
Reason given: CMS
CMS
Site now fallow
Site fallow
Date:
18/09/23-24/09/23
Mortality:
34,911
Mortality Rate:
1.64%
Reason given: Low oxygen
Low oxygen
First notification of the cycle. Business contacted: The oxygen levels at the site are reportedly low and fluctuating. As well as low oxygen levels, AGD is also present exacerbating issues. Treatment undertaken during wk 40. Some mortality experienced during treatment. FHI to monitor
Date:
25/09/23-01/10/23
Mortality:
42,295
Mortality Rate:
1.82%
Reason given: Treatment loss
Treatment loss
Second report this cycle. Treatment losses. FHI to monitor post treatment. FHI to monitor
Date:
02/10/23-08/10/23
Mortality:
31,986
Mortality Rate:
1.37%
Reason given: Low oxygen
Low oxygen
Aquagen stocks have been FW treated and thinned down more FW treating planned for WC 23rd
FHI to monitor.
Date:
16/10/23-22/10/23
Mortality:
48,953
Mortality Rate:
2.28%
Reason given: AGD / Low oxygen
AGD / Low oxygen
FHI visit scheduled
Date:
23/10/23-29/10/23
Mortality:
64,751
Mortality Rate:
2.99%
Reason given: AGD / Low oxygen
AGD / Low oxygen
Numbers have increased from previous weeks, site inspection has been scheduled FHI to monitor
Date:
30/10/23-05/11/23
Mortality:
52,251
Mortality Rate:
3.94%
Reason given: AGD/Treatment losses/PGD
AGD/Treatment losses/PGD
FW treatments planned to start on Sunday
FHI visit scheduled.
Date:
06/11/23-12/11/23
Mortality:
206,563
Mortality Rate:
11.32%
Reason given: AGD/treatment loss/PGD
AGD/treatment loss/PGD
This week, the mortality has dropped significantly to approx 0.2% per day. Continuing to monitor closely.
FHI visit scheduled
Date:
13/11/23-19/11/23
Mortality:
151,275
Mortality Rate:
8.82%
Reason given: AGD treatment loss/bacterial
AGD treatment loss/bacterial
Site visited wb 20/11/2023 and DIA taken. Awaiting results. FHI to monitor
Date:
20/11/23-26/11/23
Mortality:
57,430
Mortality Rate:
4.08%
Reason given: Treatment loss/bacterial
Treatment loss/bacterial
Site inspected 21/11 (2023-0076). AGD, Salmon gill poxvirus and Paranucleospora theridion identified. Awaiting bacteriology results. FHI to monitor.
Date:
27/11/23-03/12/23
Mortality:
48,087
Mortality Rate:
3.26%
Reason given: Treatment loss/bacterial
Treatment loss/bacterial
Site inspected 21/11 (2023-0076). AGD, Salmon gill poxvirus and Paranucleospora theridion identified. Awaiting bacteriology results. FHI to monitor.
Date:
04/12/23-10/12/23
Mortality:
70,345
Mortality Rate:
5.40%
Reason given: Treatment loss/bacterial
Treatment loss/bacterial
FHI visited 27/11/23, case number 2023-0076. Diagnostic samples collected, report outstanding. Email from health manager received 23/12, fish health challenging due to AGD, piscirickettsia and pasteurella and increasing sea lice pressure. All fish have been treated with antibiotics and FW and Salmosan. Reported that health is improving following treatments and reducing temperatures.
Date:
11/12/23-17/12/23
Mortality:
92,565
Mortality Rate:
7.51%
Reason given: Treatment loss/bacterial
Treatment loss/bacterial
FHI visited 27/11/23, case number 2023-0076. Diagnostic samples collected, report outstanding. Email from health manager received 23/12, fish health challenging due to AGD, piscirickettsia and pasteurella and increasing sea lice pressure. All fish have been treated with antibiotics and FW and Salmosan. Reported that health is improving following treatments and reducing temperatures.
Date:
18/12/23-24/12/23
Mortality:
23,482
Mortality Rate:
2.07%
Reason given: Bacterial
Bacterial
FHI visited 27/11/23, case number 2023-0076 and diagnostic samples taken. Mortality rate has reduced to a around a quarter of the previous week.
Date:
25/12/23-31/12/23
Mortality:
21,111
Mortality Rate:
1.90%
Reason given: Bacterial / Treatment loss (thermolicer)
Bacterial / Treatment loss (thermolicer)
Site inspected 21/11/23 and diagnostic samles taken -20230076. FHI to monitor
Date:
15/01/24-21/01/24
Mortality:
18,097
Mortality Rate:
1.68%
Reason given: Treatment losses
Treatment losses
FHI inspected 21/11/23, diagnostic samples collected. Results: AGD, Moritella viscosa. FHI to monitor.
Date:
19/02/24-25/02/24
Mortality:
21,571
Mortality Rate:
2.04%
Reason given: Treatment Loss (Thermolicer)
Treatment Loss (Thermolicer)
FHI inspected 21/11/23, diagnostic samples collected. Results: AGD, Moritella viscosa. Further visit scheduled. FHI to monitor.
Date:
26/02/24-03/03/24
Mortality:
21,470
Mortality Rate:
2.07%
Reason given: Treatment Losses
Treatment Losses
FHI inspected 21/11/23, diagnostic samples collected. Results: AGD, Moritella viscosa. Further visit scheduled. FHI to monitor.
Date:
04/03/24-10/03/24
Mortality:
14,817
Mortality Rate:
1.29%
Reason given: Treatment Losses (bath)
Treatment Losses (bath)
FHI to monitor. Inspection scheduled.
Date:
06/05/24-12/05/24
Mortality:
7,699
Mortality Rate:
1.13%
Reason given: Bacterial infection / CMS
Bacterial infection / CMS
Business contacted: mixed bacterial infection (including some Pasteurella)
FHI visited (2024-0152), diagnostic samples collected. Awaiting results.
Date:
27/05/24-02/06/24
Mortality:
6,169
Mortality Rate:
2.14%
Reason given: Bacterial infection / Treatment losses (Thermolicer)
Bacterial infection / Treatment losses (Thermolicer)
FHI visited (2024-0152), diagnostic samples collected. Awaiting results.
Date:
03/06/24-09/06/24
Mortality:
5,133
Mortality Rate:
2.05%
Reason given: Bacterial infection / Treatment losses (Thermolicer)
Bacterial infection / Treatment losses (Thermolicer)
FHI visited 20/5/24 (2024-0152). Diagnostic samples taken, awaiting results.
Date:
10/06/24-16/06/24
Mortality:
3,630
Mortality Rate:
1.48%
Reason given: Bacterial Infection
Bacterial Infection
FHI visited 20/5/24 (2024-0152). Diagnostic samples taken, BKD and CMS. CDN in place for BKD.
Date:
17/06/24-23/06/24
Mortality:
3,984
Mortality Rate:
1.65%
Reason given: Bacterial Infection
Bacterial Infection
FHI visited 20/05/24 (2024-0152). Diagnostic samples taken, BKD and CMS. CDN in place for BKD.
Date:
24/06/24-30/06/24
Mortality:
3,952
Mortality Rate:
1.98%
Reason given: Bacterial Infection
Bacterial Infection
Site fallow as of 1st July
Site now fallow.

Source

Inspection reports

Case Number: 2020-0149


Download Thermolicer booked from December - bad weather meant site couldn’t be treated until January so sea lice numbers increased rapidly
Lice were out of control so had to treat to get the lice numbers down. Some treatments had to be abandoned due to fish dying in the crowd/ bad weather.
Low levels of AGD were present. Freshwater treatment had helped with gills. Currently treating everything with freshwater as harvesting has been delayed. By Monday 30th March everything will have been fresh water treated, mortality has dropped right back down. Site manager believes physical treatments are to blame for increased mortality throughout march as hydrolicer was used.
Site manager raised concerns that high mortalities would occur when mechanically treating fish with PD , after post treatment mortality occurred only fresh water treatments were planned to reduce handling stress on fish.
Due to issues surrounding Covid-19 dates for fallowing and restocking are uncertain.
Mortality Event – reported – 06/03/2020 – Between – 24/02/2020-01/03/2020
-Fish Size – 2.8kg (1.01% - 10336) - ~Freshwater treatments.
Mortality Event – Reported 12/03/2020 – Between – (02/03/2020-08/03/2020)
2.8kg – 3.07% - 30703 – Treatment related mortality * PD
Mortality Event - Reported 20/03/2020 – between (09/03/2020-15/03/2020)
2.7kg – 1.4% PD and treatment related mortality. - 10901
Collected during inspection - Mortality between (16/03/2020-23/03/2020)
2.7Kg - 5,462 -0.85%
Inspection conducted by
Due to the Covid-19 outbreak a Passive surveillance inspection was conducted remotely instead of a site visit. [Original PDF]

Case Number: 2021-0310


Download Ensiled on site, and transported by Ferguson onto the mainland and take to Biogas-Energen, Cumbernauld.
Remote paperwork inspection conducted by and supervised by on 21/09/2021.
Site inspection conducted by and shadowed by on 15/09/2021.
VMD samples taken by , supervised by on 15/09/2021. [Original PDF]

Case Number: 2022-0007


Download Mortality events reported:
29/11/2021 1.32% 25459
06/12/2021 3.15% 59962
13/12/2021 2.53% 46789
20/12/2021 2.51% 45244
27/12/2021 2.0% 351172
03/01/2021 2.95% 50753
Recent sealice figures:
2021 wk49: 1.15 wk50: 2.14 wk51: 1.70
Wk52: 3.05
Salmon stock origins are from Loch Ness. Glenfinnan and Loch Arkaig. First signs of infection were observed on Noster side of Seaforth. Clinical signs of haemorrhaging on swimbladder and eyes was observed. Seaforth experiencing higher mortalities than Noster since 06/12/2021. Health checks have and are being conducted every two weeks.
Lumpfish input in October 2021. As a result of freshwater and mechanical delousing treatments there are no more lumpfish on site. Attempts were made prior to the treatments to remove fish with a brailler. Lumpfish origin: Ocean Matters, Anglesey.
The site has access to 'Foover' as a result of the 41m deep nets, and is able to remove any missed morts.
Florocol was administered as a first treatment on the whole of the site. Florocol shortages in UK have affected second treatment. Therefore, pen 3 and 5 will continue on Florocol and the rest of the site will be treated with Aquacen
(Oxytetracycline hydrochloride). This second treatment will commence w/b 17/01/2022. Prior to the second treatment, thermolicer commenced on 14/01/2022.
PSI conducted by and supervised by on 14/01/2022. [Original PDF]

Case Number: 2022-0015


Download 2 and 12 combined to free up a pen. Biomass was low in both. lump fish 180,000 ready to go into the pens once fresh water is complete. End of Feb
Surplus morts not able to be ensiled are taken to white shore cockles.
Site has recently suffered from a prolonged P.Skyensis infection which has resulted in high mortalities for several weeks running. Mortality is under control on site currently with some localised spikes attributed to post mechanical treatment loss.
Once the freshwater treatments are completed they will then feed medicated feed, staggered approach.
Thermolicer treatments under way during site visit. Most of site has been treated, 2 pens remaining. Good results from treatment over 90% clearance.
Some lethargic hanging fish observed in the pens that have recently been treated, also signs of lice damage on some fish, although mostly clear of lice. 2 pens that have yet to be treated had no hanging fish, except for a couple of runts. Some post treatment mortality was recorded but base line mortality in each pen is very low. Pens are 40 meters deep so catching fish for
VMD was difficult, only one fish was able to be caught.
Sampling error occurred during collection of VMD samples. Two antibiotic treatments were administered, the first was florfenicol and the second was oxytetracycline. Paperwork was conducted remotely before the Oxytetracycline was administered to the fish on site. So samples were taken for AMS3 residues which resulted in a positive result. On receipt of the positive result, further information was gathered from the operator which confirmed that Oxytetracycline had been administered on site and all proper records for the treatment had been maintained. [Original PDF]

Case Number: 2023-0076


Download Site inspected in response to rapid increased mortality. Week 45 (206,563, 11.32%) and Week 46 (151,275, 8.82%). Mortality at Seaforth has been aboved the reporting threshold since week 39 2023, Mortality has been attributed to a combination of issues including AGD, PGD, treatment losses and bacterial infection.
Due to time constraints imposed by poor weather on the date of inspection, only 2 pens were inspected for clinical signs of disease. 5 fish were removed for diagnostic sampling from the two pens inspected.
From inspection of the stock, approximately 50 fish in each pen were observed as moribund and lethargic, approximately 30 fish were observed with lesions to the head and flanks. A healthy population of fish was observed shoaling in each pen.
The most recent results reported from the site company vet was on 21/11/2023 which showed positives for Pasteruella skyensis and PRV.
Treatments - Tricaine, FW 20/11/2023, Thermolicer 11/11/2023.
Cleanerfish mortality - Week 46 (0, 0%), Week 45 (1,117, 0.36%), Week 44 (3,854, 1.23%), Week 43 (2,363, 0.97%) [Original PDF]

Case Number: 2024-0097


Download Peaks in salmon mortalities: 2023 wk 48 33387 (2.88%), wk 49 59170 (5.19%), wk 50 79026 (7.31%), wk 51 21285 2.13%), wk 52 20242 (2.07%). Pasteurella the main cause of mortalities with some thermolicer mortalities in wk 49 also, antibiotic
(Florfenicol) administered
2024: wk 3 17504 (1.97%) recorded as acute loss medicine (salmosan) and some pasteurella.
Mortalities for the last four weeks,18th to the 26th March 2024 5415, wk 11 8962 (0.90%), wk 10 13613 (1.54%), wk 9 20576
(2.40%), wk 8 19456 (2.22%) moritella, physical damage, poor performers some seal predation and some decomposed.
Lumpfish peaks in mortality, 2023: wk 47 3161 (2.12%), wk 48 6104 (4.18), wk 51 5112 (3.70%), wk 52 (3575 (2.68%), mainly recorded as tenbaculum but some handling morts as well.
Lumpfish mortalities for the last four weeks: wk 8 1391 (2.70%), wk 9 1928 (3.85%), wk 10 1071 (2.22%), recorded as tenebaculum, wk 11 4867 (10.33%) treatment losses (FLS flusher),
CMS potentially onsite, awaiting results of tests.
On inspection of the site a number of moribunds were observed in each pen, some with obvious physical damage. Site staff have been removing moribunds daily.
Mortality, movement and treatment records inspected 21/3/2024 remotely, all other records inspected on the 27/3/2024. [Original PDF]

Case Number: 2024-0149


Download Intel received from the Marine Directorate intelligence team about suspicion of BKD. - 14/05/2024
FHI contacted business with a follow up, requested health reports from site - 14/05/2024
IDN placed following information (test results from a 3rd party veterinary company) from business about suspicion of BKD.
16/05/2024 [Original PDF]

Case Number: 2024-0152


Download Site visited following notification of the presence of BKD from a third party.
Site has had positive results for Pasteurella, Moritella and Tenacibaculum. CMS has also been confirmed.
Site currently has permission to do livehaul and deadhaul harvests. Livehaul harvest was completed on the morning of the day of inspection. Fish are taken to Mallaig station then loaded into tankers before being transported to Blar Mhor in Fort William for processing. Deadhaul harvests are taken to Ullapool before being loaded into tankers and taken to Blar Mhor.
Mortalities from the site are preferentially ensiled on the barge before being uplifted by Fergusons and taken to either Pelagia in Shetland or ScanBio. Last collection of ensiled material was on 30/10/23.
Only tricaine used since the last inspection for sealice counts. FW and FLS was on site March 9th and good clearance (>95%) was reported. A thermolicer was on site during the inspection.
Farmed lumpfish were stocked at 5% and are being removed from harvest cages and transferred into stocked pens. 33.25% mortality since last inspection.
Site is stocked with a mix of Stofinfiskers and Aquagens. The fish came on from Inchmore and Lochailort hatcheries via Loch
Arkaig (Stofinfiskers) and Loch Lochy (Aquagens).
PGD scores have been increasing over the last couple of weeks but remain below 1.The gills of the fish sampled were pale with zoning.
Morts since last inspection:
Wk16: 0.36%, Wk15: 0.22%, Wk14: 0.22%, Wk13: 0.38%
Site plan is to fallow by September 24, however, this may be accelerated.
Several fish that were dark in colour were observed in every pen. The fish that were moribund and displaying clinical signs of disease were removed for diagnostic sampling. There were several leathargic fish also observed across the site but could not be caught with a hand net and so were not sampled. Fish sitting deeper in the water, although slightly lethargic, appeared in good physical health. The moribund fish/lethargic fish sitting at the surface had higher than average lice loads.
Sites covered by movement restrictions are automatically scored as high risk for surveillance frequency. [Original PDF]

Source