Site Details: Girlsta Hatchery

Girlsta
ZE2 9SQ
Operator: Scottish Sea Farms Ltd
Water type: Freshwater

Inspection reports

Case Number: 2020-0058


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Recent smolts stocked to DMA 3a went to sea at a reported average weight of 190g, site manager reported that movements went well, but were delayed due to adverse weather. No issues observed or reported on site. Grading operations were ongoing during the inspection, with the large grade due to go to sea in April 2020 to DMA 3a. Fish sampled for VMD appeared in good conditions and were of uniform size.
No treatments have been required with exception of salt due to increasing nitrate levels. Site is examining possibility to move intake pipe work to deeper water, it was reported that by doing this the intake water temperature could be reduced by upto
6oC.
An input of ova is due for delivery on Thursday 20/02/20, from Stofnfisker.
Site thermometer used due to biosecurity procedures on site. Water temperature in the parr/smolt unit was 11.2oC, temperatures in fry unit are higher, but kept at 14oC or below.
Mortalities on site very low and fish showed good shoaling behaviour and feed response. [Original PDF]

Case Number: 2021-0223


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TWMA - used in event of mass mortality.
Fire in WK23, O2 delivery cabinet caught fire, cause unknown. Oxygen was quickly isolated and the site was evacuated. During
Hydrogen sulphide event - caused by turning on equipment that was turned off for a long time. In contact with FHI and institute in Norway (Niva), they advised that there were signs of a water borne insult to the fish, most likely hydrogen sulphide. Site now running at least one tank in line to ensure that there is flow throw throughout the site, there is also monitoring of H2S. Trying to avoid anaerobic conditions throughout the site to prevent it happening. No issues since and mortality did not go above reporting threshold (WK36 - 44,200 1.11%, WK37 - 49,651 1.27%)
Only treatments that are done is salt treatment when there is a spike in nitrite as a water treatment.
Site thermometer used instead of inspector's for biosecurity.
Inspection and casework carried out by and observed by VMD - tanks 17/18/19 carried out by , observed by
, tanks 20/21/22 carried out by , observed by . [Original PDF]

Case Number: 2022-0040


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Hatchery experiences low mortality across all 4 units (incubation, first feeding, parr and smolt).
Most recent ova input from Aquagen observed an accumulated mortality of 3% specifically due to stress hatching.
Site still having issues with hydrogen sulphide spikes in the system. Issues occurred during Autumn 2021, with an accumulated mortality of 30,000 over three separate incidents.
Site has not treated since 2014 with medicines, therefore no recent treatment records to inspect. Salt is used on site if there are spike in nitrates.
The one smolt tank was observed and noted to exhibit different swimming behaviour than other tanks. This tank was seen to go with the flow within the tank, rather than against it.
In addition, upon removal and inspection of some fish, slight red vents were observed. This was attributed to the fact that fish ha
Paperwork inspected on 01/03/2022 by and supervised by .
Site inspected on 07/03/2022 by , supervised by .
VMD samples taken on 07/03/2022 by and supervised by . Fish sampled were seen to be in good health. [Original PDF]

Case Number: 2023-0013


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Paper work and site inspection conducted by
The hatchery has experienced very low mortality since the site was last inspected. On the date of inspection, the site was stocked with only Aquagen fish, which are due to go to sea by the middle of February. The site usually takes 3 batches of fish per year with the other supplier being from Iceland.
Site is due to be restocked within the next couple of weeks with 1.95 million ova (Aquagen).
Daily morts are frozen and taken to the incinerator plant in Lerwick. If any culling is to take place or in the event of increased mortality, morts are removed and taken as whole fish waste to SEM.
From the physical inspection of the site, fish appeared to be healthy with no clinical signs of disease observed. Fish sampled for VMD displayed no internal clinical signs of disease. [Original PDF]

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