Site Details: Ardintoul

Letterfearn
Glenshiel
Kyle, Ross-shire
IV40 8HT
Operator: Mowi Scotland Ltd
Water type: Seawater

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Mowi's macerator for mass morts - washed down with Formic Acid from Don Staniford on Vimeo.

Average female lice per fish

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Salmon Scotland mortality

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Cumulative mortality over full production cycle

Production cycle end date: Aug 2018
Total losses: 26 %

Production cycle end date: Jun 2020
Total losses: 27 %

Production cycle end date: Jun 2022
Total losses: 27.1 %

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Fish Health Inspectorate mortality

Date:
03/01/22-09/01/22
Mortality:
69,704
Mortality Rate:
8.74%
Reason given: Complex gill diseases and SRS.
Complex gill diseases and SRS.
SRS being medicated with antibiotics.
PSI conducted 06/01/2022. Fish are being treated with antibiotics. Mortality reduced considerably in week following (WB:10/01/20220 to 2.17% FHI to monitor
Date:
10/01/22-16/01/22
Mortality:
20,202
Mortality Rate:
2.78%
Reason given: Complex gill diseases and SRS.
Complex gill diseases and SRS.
PSI conducted 06/01/2022. Fish are being treated with antibiotics. Reported mortality for wb 17/01/2022 so far is 1.04% FHI to visit site start of february.
Date:
17/01/22-23/01/22
Mortality:
8,857
Mortality Rate:
1.29%
Reason given: Complex gill diseases and SRS.
Complex gill diseases and SRS.
Site to be visited w/b 07/02/22.
Date:
24/01/22-30/01/22
Mortality:
13,441
Mortality Rate:
2.01%
Reason given: Complex gill diseases and SRS.
Complex gill diseases and SRS.
Site was visited 08/02/2022. SRS confirmed on site and treated with antibiotics, now no longer detected in stock. H202 treatments were also carried out on site, but were aborted following increased mortalities. Moribund fish were examined during inspection but no clinical signs of disease were observed so no samples were taken. Mortalities reduced the following week. FHI to monitor.
Date:
31/01/22-06/02/22
Mortality:
8,934
Mortality Rate:
1.36%
Reason given: Complex gill disease issues ongoing on site causing significant mortality.
Complex gill disease issues ongoing on site causing significant mortality.
Site was visited 08/02/2022. SRS confirmed on site and treated with antibiotics, now no longer detected in stock. H202 treatments were also carried out on site, but were aborted following increased mortalities. Moribund fish were examined during inspection but no clinical signs of disease were observed so no samples were taken. Mortalities have reduced from previous week. FHI to monitor.
Date:
28/03/22-03/04/22
Mortality:
8,158
Mortality Rate:
1.30%
Reason given: Gill Disease/Treatment Loss
Gill Disease/Treatment Loss
Site inspected 08/02/22 - no clinical signs of disease were observed so no samples were taken. FHI to monitor
Date:
11/04/22-17/04/22
Mortality:
6,981
Mortality Rate:
1.13%
Reason given: Gill infection
Gill infection
Business correspondent contacted. Mortalities are attributed to complex gill disease as a result of a water borne insult. Site inspected 28/03/2022 where no clinical signs of disease were observed. Slight decrease in mortality since w/b 05/03/2022. FHI to monitor.
Date:
23/05/22-29/05/22
Mortality:
6,428
Mortality Rate:
1.56%
Reason given: Thermolicer treatment mortality
Thermolicer treatment mortality
Cumulative mortality levels for week begining 30/05 have decreased and below reporting level but not all data is in at time of this submission. FHI to monitor
Date:
18/09/23-24/09/23
Mortality:
13,360
Mortality Rate:
1.36%
Reason given: AGD
AGD
First notification of the cycle. Business contacted: AGD has been severe at this site. The fish were treated with freshwater and peroxide earlier in cycle. The treatments were successful but AGD quickly returned to the site after treatment. More treatments are planned in the future and mortality is reportedly thought to be decreasing. FHI to monitor
Date:
06/11/23-12/11/23
Mortality:
25,589
Mortality Rate:
2.70%
Reason given: AGD/treatment loss
AGD/treatment loss
Currently FW treating, expect to be finished on Friday
Second report this cycle. FW treatment underway. FHI to monitor mortalities at the site following completion of treatment.
Date:
13/11/23-19/11/23
Mortality:
14,683
Mortality Rate:
1.59%
Reason given: AGD/treatment loss
AGD/treatment loss
Mortalities have reduced from previous week. FHI to continue to monitor.
Date:
20/11/23-26/11/23
Mortality:
48,095
Mortality Rate:
5.30%
Reason given: AGD/treatment loss
AGD/treatment loss
Company health director contacted. FW treatment carried out from 01/12 to 07/12. Mortality levels for wk 49 still elevated and may increase due to treatment losses. Site to be inspected.
Date:
27/11/23-03/12/23
Mortality:
34,903
Mortality Rate:
4.06%
Reason given: AGD/treatment loss
AGD/treatment loss
Company health director contacted. FW treatment carried out from 01/12 to 07/12. Mortality levels for wk 49 still elevated and may increase due to treatment losses. FHI to monitor.
Date:
04/12/23-10/12/23
Mortality:
17,351
Mortality Rate:
2.63%
Reason given: AGD/treatment loss
AGD/treatment loss
FHI to monitor.
Date:
11/12/23-17/12/23
Mortality:
7,721
Mortality Rate:
1.20%
Reason given: AGD/treatment loss
AGD/treatment loss
Mortality on downward trajectory. FHI to monitor.

Source

Inspection reports

Case Number: 2020-0031


Download Mortality report received from business on 24/04/2020. w/b 13/04/2020 - 5215 (1.03%) attributed to CMS and physical damage from recent sealice treatment (Thermolicer), majority attributed to CMS.
FHI contacted business for further information and to conduct a PSI.
A previous mortality event was reported by the business: w/b 30/03/2020 - 5625 (1.08%) attributed to CMS and physical damage from recent sea lice treatment.
Additional weeks checked for mortality during inspection: w/b 06/04/2020 - 4796 (0.9%), w/b 20/04/2020 - 5532 (1.1%) - both weeks mortality attributed to CMS.
Sea lice have been kept below reporting levels since week 14 2020, following average adult female lice numbers being above
2 from week 8 2020. These were reported to FHI, numbers reduced following a combination of mechanical and medicinal treatments. Average adult female lice numbers currently at 0.7
Site is currently harvesting out pens worst affected by CMS, pen 6 to be empty by 03/05/2020 and pen 11 to be empty by
10/05/2020.
PSI case conducted as unable to visit site due to COVID-19 situation. [Original PDF]

Case Number: 2021-0273


Download Fish came onto site on 17/02/2021 from Lochailort hatchery (FS1269) and Loch Lochy (FS0150).
Fish are double stocked so will begin moving to Loch Alsh on Friday 30th July.
3 Slice treatments have been conducted since fish arrived on site, one in March, one in May and the most recent one in July.
Last treatment was completed on 16/07.
Florfenicol treatment conducted in March for Pseudomonas infection in Lumpfish.
Lumpfish were stocked at 12%. Mortality across the site since their input on 09/02 was 22.3% (48,499)
Salmon mortality across the site since input has been very low (2% since input).
Lep numbers have remained low since input and site manager attributes this to the presence and effectivess of the lumpfish on site. Caligus numbers increased to >1, <2 towards the end of June. Slice treatment completed in July and numbers reduced <1.
Fish were sitting deep in the water and were difficult to observe, although they appeared to be shoaling well. No moribunds or mortalities were observed on this site during the inspection.
Fish sampled for VMD appeared healthy. [Original PDF]

Case Number: 2022-0001


Download Increased mortalities reported weekly since w/b 6/12/21 due to SRS and complex gill disease.
Yesterday trial peroxide treatment of 2 pens, this has caused increased mortality in the treated pens so have put off treating the remaining pens for now.
Vet report says mortality is driven by gill issues (complex gill disease) not bacterial infection. PGD, AGD, anaemia, environmental gill insult.
Looking at different treatment options like freshwater. However gills are damaged and any handling is likely to increase mortalities. Discussion on-going as to how to manage the situation.
Some sort of environmental damage possibly jellyfish or plankton bloom at some point. Gills damaged PGD in
September/October, then issues with AGD which were thought to be improving until situation started to deteriorate again in
December with complex gill disease causing large level of mortality (all reported). Water temperature still fairly high for the time of year around 9C.
SAL Stofinfiskur stock. WRS imported from Ireland. LUM from Anglesey. [Original PDF]

Case Number: 2022-0019


Download Remote inspection on 02/02/22 by , observed by and .
SAL Stofnfiskur stock from Lochailort hatchery. WRS all wild sourced from Ireland, England and Scotland. LUM (farmed) from
Anglesey (Ocean Matters).
Increased mortalities reported weekly since December 2021 due to SRS and complex gill disease. SRS treated with antibiotic and no longer detected. Complex gill issues persist, although mortalities are decreasing.
H2O2 - 05/01/2022 partially treated site (2 pens) then encountered high mortalities and stopped treating site.
Sea lice treatments carried out are site specific, not in conjunction with other farms in the FMS.
Site inspection carried out on 08/02/2022 by , observed by . VMD sampling done by , observed by .
The main fish population was feeding deep in the water column and 3 moribunds in total were observed. These were brought into the lab for examination but no clinical signs were observed. The fish sampled for the VMD looked healthy both externally and internally. [Original PDF]

Case Number: 2023-0318


Download Wrasse are wildcaught from around Gairloch, Loch Ailort, Mull and Uig and lumpfish were transferred from Ocean Matters
(Anglesey).
Cleaner fish mortality since input - wrasse 25,185 (17%) and lumpfish 10,716 (6.9%).
Salmon came on from loch ailort at the beginning of 2023 and are reported to be performing well so far. Micro jellyfish were present in the water from June until last week so feeding was reduced to avoid interaction. Feeding increased again once volume of jellies had reduced.
Lep and Caligus numbers very low since last inspection. Calagus beginning to increase so site has an Alphamax treatment planned for wk29 followed by a prophylactic Slice treatment.
Live haul harvests are taken to Mallaig.
Deltafav treatment (Alphamax) was completed on Monday 17th and site manager reported a 90% clearance in calagus from the fish following an increase over the weekend. A slice treatment had begun on the day of inspection.
No moribunds were observed on the site and fish appeared in good physical health and were active in the cages. Fish sampled for VMD also appeared in good condition externally and internally upon examination and demonstrated a strong feed [Original PDF]

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