Average female lice per fish

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Salmon Scotland mortality

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Cumulative mortality over full production cycle

Burkwell Production cycle end date: May 2018
Total losses: 34.3 %

Burkwell Production cycle end date: Jun 2019
Total losses: 25.7 %

Burkwell Production cycle end date: Jul 2020
Total losses: 7.8 %

Burkwell Production cycle end date: May 2022
Total losses: 5.4 %

Burkwell Production cycle end date: Jun 2023
Total losses: 11.8 %

Burkwell Production cycle end date: Jul 2024
Total losses: 10.1 %

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Inspection reports

Case Number: 2022-0111

Download Remote inspection conducted by , supervised by (20/04/2022)
Site inspection and VMD sampling conducted by , supervised by (27/04/2022)
Temperature taken using thermometer T309. Harvesting has commenced onsite, cage 1 had been crowded and was being harvested (dead haul) by Aqua Viknes at time of inspection. Fish are unloaded at Cullivoe and transported to the Yell packing station. Fish crowded for harvest appeared in good condition.
Fish in remaining cages were deeper in the water, but were shoaling well and appeared in good condItion. Good feed response displayed across all cages.
Workboat with ROV system was on site removing mortalities from cages at time of inspection, this was reported to work well and removed the reliance on divers to remove mortalities. [Original PDF]

Case Number: 2025-0137

Download Treatments: This cycle: Hydrolicer in January 2025 (3 cages) and Nov 2024 (whole site). Last cycle: Freshwater 2023, hydrolicer October 2023 (whole site), SLICE Sep 2023. Previous cycle: Thermolicer March 2023 and October 2022.
FMA not fallowed synchronously - risk assessment seen (dated Nov 2024).
Treatments: This cycle: Hydrolicer in January 2025 (3 cages) and Nov 2024 (whole site). Last cycle: Freshwater 2023, hydrolicer October 2023 (whole site), SLICE Sep 2023. Previous cycle: Thermolicer March 2023 and October 2022.
Health surveillance - 10th January 2025 - 3 pens checked, no significant results, some non-AGD lesions on the gills.
Remote inspection carried out 24/04/2025 with additional paperwork i.e. movement book seen on the day of inspection.
Accompanied on site visit by the companies regional vet. Fish were shoaling deeper within the water column. Across all stocked pens, eight fish were observed swimming slower at the water surface by the net but all moved off when approached.
Two fish were observed to have a couple of lesions/winter sores on their body and in pens 5 and 8 some fish were leaping out of the water. No sealice were observed while walking around the site. VMD samples were taken from pen 6 - two Caligus were on this fish and it appeared healthy both internally and externally. [Original PDF]

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