Site Details: Glenfinnan

The Cottage
Guesachan Polloch Forestry Road
Inverness-shire
PH37 4LU
Operator: Mowi Scotland Ltd
Water type: Freshwater

Fish Health Inspectorate mortality

Date:
05/12/22-11/12/22
Mortality:
16,261
Mortality Rate:
1.73%
Reason given: Fungus
Fungus
Business correspondent contacted for further info. Fish due to be transferred to SW soon. FHI to monitor.

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Inspection reports

Case Number: 2020-0353


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PSI carried out following report of increased mortality by business - w/b 10/08/20: 61,188 (8.07%)
Recent transfer of fish onto site from Inchmore (FS0226). 200,000 on 13/08/20 and 105,000 on 14/08/2020.
On days of transfer site temperature recorded as 17.2 °C and 17.4 °C respectively. Dissolved oxygen levels on site were normal.
On the 14th, fish transferred on 13th appeared lethargic and mortality began to increase. Water samples showed no significant plankton levels. Examination of the fish, showed some minor gill pathology. A significant amount of vaccine was observed in the gut and increased levels of adhesion were also observed. No plankton was observed in the gut. No other pathology was observed.
Fish had recently been vaccinated at Inchmore with PD7 and a Pasteurella skyensis vaccine.
Subsequent water samples on 17th and 21st showed increasing levels of plankton with Asterionella sp and Cyanobacteria identified - 25/ml and 70/ml respectively, however by this time mortality had reduced significantly.
Mortality affected only the newly introduced stock, with a loss of approximately 20%. The mortality is attributed to a stress event, potentially influenced by the transfer of the stock, high temperatures and increasing plankton at the site.
The following week (w/b 17/08/20) mortality fell to 672 across site. The two weeks before the mortality event, mortality was 11 and 35 across the site respectively. [Original PDF]

Case Number: 2020-0487


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Site does not currently mix feed and hasn’t mixed feed onsite since before 2014. Licence to be maintained on site for the future.
Paperwork completed 11/11/2020. [Original PDF]

Case Number: 2021-0063


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Stock on site have been vaccinated against PD with Ajmicro 1 and 6.
Haemorrhagic smolt syndrome (HSS) and nephrocalcinosis are present on site. HSS has been the most significant cause of mortalities, however is not causing large mortalities within the population on site.
Ensiled waste is collected by Fergusons and taken to Scanbio in Inverness.
Fish came onto site from Inchmore (FS0226).
Site has begun moving fish off to sea sites. ~112k fish will be moved to Colonsay (FS1296), the remaining stock will go to
Seaforth (FS1042).
Site is prophylactically treating against fungus every 2 days using Formalin and Cress (Bronopol).
A few moribund fish observed across the site (~4) displaying fungal lesions.
Case Paperwork completed remotely on 21/04/2021. Site inspection completed on 28/04/2021. [Original PDF]

Case Number: 2023-0505


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Fish came on from Inchmore (FS0226) and Lochailort (FS1269). Fish were meant to be 65g at transfer, but were closer to
90g. Fish appeared healthy pre-transfer, however following transfer, Saprolegnia developed and mortalities began to slowly increase. Treatments of Pyceze and Aquacen have been completed to control the fungal infection.
Mortalities are incinerated on site, however large culls are stored in IBCs at the shorebase before collection by Billy Bowie and taken to Dundas or Barkip for disposal.
On day of inspection, some cages were being loaded into lorries for transport to Eilean Grianain (Carradale) (FS1176).
Inspector observed good crowding in the cages that were being pumped into the lorries.
Site is made up of 2 cage groups (Salmon Bay and Black Bay). Fish were difficult to observe as they were sitting deeper in the nets and the water was dark in colour. Selected nets were raised to aid removal for VMD sampling. Fish that were observed in the raised nets were active in the cages, however infection with Saprolegnia was evident across the site. Mortalities were observed in most cages, however few moribunds were observed. These were being removed by handnet during the inspection and were examined. Some individuals had significant fungal growths around the head, tail and flank.
Fish that were sampled for VMD were mostly healthy externally and internally, with the exception of a few individuals which had fungal growths on the body. [Original PDF]

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