Refinement of efficacy of nano-filtered seawater for sealice control
1 Purpose
This study is to refine very novel chemical free treatments using specially filtererd seawater that are being undertaken and developed commercially for alternative treatments to controlling sealice infestations in Atlantic salmon. To date, treatments show excellent effects in tarpaulin treatments overseas. However, efficacy in well boat treatments have been variable. This study is necessary to refine the treatment and establish cut off values for water quality that will improve operations in well boat treatments.
2 Distress
Fish will be infected with sealice - a normal parasite of Atlantic salmon, The infection will occur under controlled conditions and at levels that are typical of those experienced in Norwegian fjords. It is necesary to perform the bath treteaments using the treatments on infested fish.
3 Expected benefit
This study will refine currently approved research that is field testing the treatment of sealice infested Atlantic salmon under commercial conditions. Rather than contnuing with possible failed efficacy involving tens of thousands of fish, these studies will allow refinement and therefore improve efficacy and make its application in Norwegian aquaculture a viable option for parasite and fish welfare control.
4 Number of animals, and what kind
In total 800 Atlantic salmon smolts will be using ithis study
5 How to adhere to 3R
This study is a refinement of a larger commercial oriented field study. The smaller number of fish to be used compared to commercial scale will allow determination of which water quality limits are most important for efficacy and establish cut off thresholds for some of the water quality parameters.
This study is to refine very novel chemical free treatments using specially filtererd seawater that are being undertaken and developed commercially for alternative treatments to controlling sealice infestations in Atlantic salmon. To date, treatments show excellent effects in tarpaulin treatments overseas. However, efficacy in well boat treatments have been variable. This study is necessary to refine the treatment and establish cut off values for water quality that will improve operations in well boat treatments.
2 Distress
Fish will be infected with sealice - a normal parasite of Atlantic salmon, The infection will occur under controlled conditions and at levels that are typical of those experienced in Norwegian fjords. It is necesary to perform the bath treteaments using the treatments on infested fish.
3 Expected benefit
This study will refine currently approved research that is field testing the treatment of sealice infested Atlantic salmon under commercial conditions. Rather than contnuing with possible failed efficacy involving tens of thousands of fish, these studies will allow refinement and therefore improve efficacy and make its application in Norwegian aquaculture a viable option for parasite and fish welfare control.
4 Number of animals, and what kind
In total 800 Atlantic salmon smolts will be using ithis study
5 How to adhere to 3R
This study is a refinement of a larger commercial oriented field study. The smaller number of fish to be used compared to commercial scale will allow determination of which water quality limits are most important for efficacy and establish cut off thresholds for some of the water quality parameters.