Average female lice per fish

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Salmon Scotland mortality

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Cumulative mortality over full production cycle

Balta Isle Production cycle end date: Aug 2019
Total losses: 6.1 %

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Inspection reports

Case Number: 2021-0224

Download Remote inspection carried out by , observed by , on 16/07/2021. Physical inspection carried out by , observed by
on 20/07/2021.
VMD sampled by , observed by .
Q14 SLI - If fish are held without treatment for sea lice during harvest then welfare of fish is prioritised. Any pens that have an increase in lice numbers will be harvested first, or harvest will be postponed to treat to prevent part populations being held without treatment. [Original PDF]

Case Number: 2023-0239

Download Site inspected in a calm sea sate with good visibility. Fish were observed shoaling and responding positively to routine feeding regimes. No clinical signs of disease were observed during the inspection, fish sampled for VMD appeared healthy both externally and internally.
Fish at Balta Isle tested positive for PD in December 2023 and have been subject to reduced apatite until recent weeks. During the inspection of the site, a larger than normal range in fish sizes was observed in the worst affected pens for PD (Pens 1 & 2).
Despite the PD diagnosis, mortality onsite has remained very low throughout the duration of the current production cycle.
The site treated with freshwater from 27th April to 20th May 2023.
Balta Isle operates souly within its own disease management and acts as a nursery site supplying stock for further ongrowing at Cooke Aquaculture sites in Shetland. [Original PDF]

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