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Inspection reports

Case Number: 2020-0095

Download First cycle of fish going through the site.
Surveillance frequency number of movements offsite could not be assessed properly due to being the first cycle of fish and no movements have occurred yet. Estimate of movements off resulted in site being assessed as medium.
Sites thermometer used for biosecurity reasons. [Original PDF]

Case Number: 2021-0551

Download Site inspected to collect information regarding disinfection procedures.
Paperwork completed by supervised by , visit conducted by observed by [Original PDF]

Case Number: 2022-0591

Download Site inspection and paper work conducted by , supervised by .
The site is split into two distinctive sections relating to development stage, a fry section containing 8 45m3 recirculation unit tanks and a separate parr section, consisting of 8 175m3 flow through unit tanks.
Fish in both sections were observed to be in good health, no clinical signs of disease were observed from the physical inspection of the site. Fish were observed shoaling well and responding positively to routine feeding regimes. Mortality has been low in recent months and the fish appear to be progressing well in their development stages.
A mortality event from 22nd - 28th August 2022 is still under internal review following a loss of 53.33% which affected all 8 tanks within the fry section of the site. It is believed that water supplied to the site had become contaminated prior to water intake which lead to a rise in hydrogen sulphide levels leading to significant mortality within the fry section. Following a deep clean of the sites water reserve and facilities, the site was restocked and no further issues have occurred.
The sites own thermometer was used to obtain a water temperature reading for biosecurity reasons. [Original PDF]

Case Number: 2023-0216

Download 13/2/23-19/2/23 3.93% 0.3g fish fungus 124,528 Formalin treatment
1/5/23-7/5/23 6.04% 0.5g fish fungus 184728 aquasen/cress treatment
8/5/23-14/5/23 27.73% 4.5g fry 797,014 fish
15/5/23-21/5/23 10.42% 216330 fish - parr section
From mort report; "This mortality was in parr unit (separate from the fry unit detailed in wk18 mortalities). Issues with pH in water. Lag between pH buffer added and probe feedback. Changes have been made to probes and protocols for improved real time feedback to reduce lag and improve response. Mortalities in remaining stock being closely monitored and they may be culled. Discussed with and he will inform APHA".
Historic mortality event from 22nd - 28th August 2022 a loss of 53.33% which affected all 8 tanks within the fry section of the site. It is believed that water supplied to the site had become contaminated prior to water intake which lead to a rise in hydrogen sulphide levels leading to significant mortality within the fry section. Following a deep clean of the sites water reserve and facilities, the site was restocked and no further issues had occurred.
Currently in the fry section 8 tanks with 1309989 fish @ 0.7g which will be ready to move to the parr section in 6 weeks. Parr section was stocked on 10th-18th April 2023 from the fry section
Peak daily mortality in parr section; 8/5/23 34500 2.52%, 9/5 83768 6.26%, 10/5 134352 10.76%, 11/5, 140576 12.61%, 12/5
148919 15.29%, 13/5 96505 11.7% 14/5, 86693 11.9%, 15/5 107932 16.82%, 16/5 17234 3.23%.
Records checked and adequately maintained; site details, mortality records and health surveillance records.
In the parr section the prob monitoring the PH is placed just after caustic soda or bicarbonate soda is added. This results is the readings from this probe jump up and down so the cut off from this probe has been over-ridden. There are 8 tanks in the cycle but only 4 were stocked at the time of the incident. 10 cycles prior to this one with no issues. 24/5/23 TMS used to cull remaining stock due to compromised (burnt) gills.
Health reports from 15/5/23 from Pharmaq; gills evidence of lamellar surface damage with adhesions, hyperplasia and lamellar fusion. Epithelial cell necrosis/apoptosis and detachment sometimes associated with debris containing filamentous bacteria and lower numbers of large segmented filamentour bacteria like organisms. Hyperplasit filament thickening and clubbing. All fish showed eosinophilic or hyaline globular inclusions within kidney and splenic macrophages. Post acute gill pathology may indicate recent irritant or toxic gill lamellar surface damage.
Poxvirus results from 12/5/23 - PCR 5/5 positive Ct values range 23.5-26.9
Cycle consists of; Tanks-probes- drum filter- biofilter - doser- probes- tanks - Also concrete mixing tank which had a thick biofilm above the water line but below the water lie was stripped clean. Thought combination of caustic soda and bicarbonative soda may have removed the biofilm into the system. [Original PDF]

Case Number: 2024-0056

Download 2023 Fry elevated mortalities: Wk 45 25438 (1.35%) first feeding morts
Fry mortalities for the last 4 weeks wk 10 212 (0.01%), wk 9 2734 (0.17%), wk 8 24822 (1.50%) gut fungus, wk 7 14187
(0.85%)
2023 parr increased mortalities: wk 30 34626 (2.51%) caused by burrowing following a power failure and loss of light.
2023 July parr wk 9 309 (0.02%) wk 8 185 (0.01%)wk 7 140 (0.01%) wk 6 1127 (0.07%)
Gut fungus had caused an increase in fry morts salinity was increased to treat. Salt back ground level increased to 1.3ppt, normally sits at 0.6-0.8 ppt.
Paperwork inspected on the 4th and 5th March 2024, site inspection conducted 5th March 2024
Site thermometer used due to biosecurity protocols. Thermometers are regularly calibrated against a mercury thermometer. [Original PDF]

Case Number: 2024-0381

Download The site was inspected due to a mortality event report received by the FHI for wk 36. mortality records were inspected with the last four weeks being:
Wk 38, 3521 (0.1%), wk 37 213558 (5.75%), wk36 382624 (16.95%), Wk 35 694 (0.03%), mortality event due to water quality issue. No other peaks in mortality noted during the period checked.
The cause of the mortality was a water quality issue. The site has a large ‘make up’ fresh water storage tank that supplies all the Applecross sites, there was a huge demand placed on the storage tank as contractors started to fill up tanks in one of the smolt on-growing units and also lorry transport tanks were being filled with water. The level inside the tank dropped by around four meters still leaving 2 meters within the tank however, due to the influent water and discharge pipes being located one above the other, the low levels resulted in turbulence that caused sediment to be disturbed which went into the pipeline that feeds the sites, the Applecross Hatchery being the first on the line. This resulted in a spike in hydrogen sulphide which increased to 0.03 milligrams/litre stressing the fish and causing a rapid decrease in oxygen. The emergency oxygen was used to bring the O2 levels back up.
On investigation it was found that the water tank had a hole in the roof likely from a storm but this had gone unobserved. They suspect that here has been sediment build up from organic matter landing in the tank as the influent water is screened to 30 microns, ozone and uv treated prior to being in the tank.
The water tank itself was newly installed however the specification it was built too may not be adequate for the conditions on the site as it is fairly exposed, talks are on-going with the contractors.
By the time of the inspection a cherry picker had been used to repair the roof. Ozone has been increased within the refreshing loop to further sterilise the water.
It was reported that the low water level was not really an issue as it was not low enough to trigger the low water alarm.
The system is to be put onto an effective flow through configuration to allow the tank to be fully drained, cleaned and disinfected. The pipe configuration is to be changed so that the influent water pipe is opposite the outflow pipe which should result in less turbulence when water levels decrease.
Histo samples had been taken, which revealed damage consistent with acute gill insult, damage to other tissues indicate an acute water borne insult.
On inspection of the site no moribunds or clinical signs of disease were observed.
Wk 38 mortality data was amended on the 27/9/2024 following communications with the company and shows the data for the full week. [Original PDF]

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