«FOREWORD This Code of Practice (CoP) represents the culmination of months of effort by a dedicated number of individuals from within the industry and ...»
11. TRAINING AND PROCEDURES Staff should be given appropriate training. Highly trained and disciplined staff are essential for maintaining the required level of hygiene and adherence to protocols. Written protocols, including risk assessments, which are regularly audited will increase security and are particularly important for activities on remote sites. These should be formally audited through existing quality assurance schemes such as the Scottish Quality Salmon scheme or an equivalent. The SDP2 should be followed.
1. Fisheries Research Services, Marine Laboratory, Joint Government/Industry Working Group on Infectious Salmon Anaemia (ISA). Final Report of the Joint Government/Industry Working Group on Infectious Salmon Anaemia (ISA). 2000. Edinburgh, the Scottish Executive, 136pp.
2. Fisheries Research Services, Marine Laboratory. 2000. Disinfection Guide with Regard to the ISA Virus, Version II January 2000. Aberdeen, Fisheries Research Services, 7pp.
3. SERAD, ASFB, BTA, FRS, SQS. 2000. Report of the Working Group On Farmed Fish Escapes. Edinburgh, the Scottish Executive Rural Affairs Department, 10pp.
have overseen the Cleaning and Disinfection procedures outlined in FRS Marine Laboratory Aberdeen. Disinfection Guide with regard to the ISA Virus: Version II.
APPENDIX II Feed deliveries Feed Deliveries by Boat The Final Report of the Joint Government / Industry Working Group on Infectious Salmon Anaemia (ISA) recommends a number of practical methods to be used on salmon farms to minimise transmission of ISA. The industry /Government publication A Code of Practice to Avoid and Minimise the Impact of Infectious Salmon Anaemia (COP) set out a framework of guidelines to minimise horizontal (site-to-site) transmission of ISA and other diseases of fish. The current Disinfection Guide with regard to ISA virus (Version II) is regarded as best practice at fish farm sites and processing plants. These documents should be consulted with regard to feed boat movements, cleaning, and disinfection procedures.
What are the risks of disease transmission associated with feed deliveries?
The risk of disease transfer between sites by delivery boats is regarded as low where contact between fish, equipment and contaminated sea water has been avoided. However, it is prudent to take precautions as the number of feed deliveries made by boats is increasing and usually involves serial deliveries to a number of sites. The risk of disease agents being carried on the outer surface of the hull is thought to be low.
The greatest risks of transfer of disease are considered to be via fish movements, fish waste, blood water; or occur when well boats travel through infected areas with open valves.
How can these risks be minimised?
The following good hygiene and fish husbandry practices are recommended to minimise inadvertent horizontal transmission of disease.
Restricting access :
• by site staff* to the feed vessel
• from feed vessel to farm cages and site equipment
• feed uplift from sites during delivery of fresh feed
• simultaneous carriage of waste feed and fresh feed
• that, at source, food is processed to ensure destruction of fish pathogens
• that food is contained in clean, sealed containers, stored where necessary to prevent scavanging by birds or rodents
• Each delivery is to an individual hydrographic area, to sites of the same health status or to those of highest health status first, and preferably to a single company
• Priority is given to the youngest year class of fish
• The appropriate vessel cleaning and disinfection procedure for each delivery Disinfection stages required by feed delivery boats under different operating circumstances In addition to the guidelines for well boats (COP. p6)
Bibliography A Code of Practice to avoid and minimise the impact of Infectious Salmon Anaemia (ISA). Edinburgh, the Crown Estate, 16pp.
Disinfection Guide with regard to ISA Virus, Version II January 2000. Aberdeen, Fisheries Research Services, 7pp.
Final Report of the Joint Government/Industry Working Group on Infectious Salmon Anaemia (ISA), January 2000.
Edinburgh, the Scottish Executive, 136pp.
McAllister, P.E. and Bebak, J. (1997) “Infectious Pancreatic Necrosis Virus in the Environment: Relationships to Effluent from Aquaculture Facilities”, J. Fish Dis. 20, 201-207.
Torgersen, Y. and Hastein, T. (1995) “Disinfection in Aquaculture”, Rev. Sci. Tech. Off. Int. Epiz. 14(2), 419-434
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The Crown Estate 10 Charlotte Square Edinburgh EH2 4DR ISBN 0 9532838 6 0 Crown copyright © 2000
Cover photograph Henderson Photography Ltd