|Liu, Dibo - Leibniz Institute Of Freshwater Ecology And Inland Fisheries|
|Pedersen, Lars-flemming - Technical University Of Denmark|
|Straus, David - Dave|
|Meinelt, Thomas - Leibniz Institute Of Freshwater Ecology And Inland Fisheries|
Submitted to: International Conference on Diseases of Fish and Shellfish
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2015
Publication Date: 9/6/2015
Citation: Liu, D., Pedersen, L., Straus, D.L., Meinelt, T. 2015. Fish-friendly prophylaxis/disinfection in aquaculture: Low concentration of peracetic acid is stress-free to the carp (Cyprinus carpio) after repeated applications [abstract]. 17th EAFP International Conference on Diseases of Fish and Shellfish, September 7-11, 2015, Las Palmas. p. 144.
Technical Abstract: Application of peracetic acid (PAA) at low concentrations has been proved to be a broad functional and eco-friendly prophylaxis/disinfection method against various fish pathogens. Therefore, regular applications of low concentration PAA is sufficient to control (potential) pathogens in recirculating aquaculture systems (RAS). However, there is lack of knowledge whether application of low concentration PAA can affect fish welfare. We evaluated in the present study whether repeated applications of low concentration PAA could induce continuous stress to the carp. The stress response was estimated by the increase of water cortisol released from the carp. The results showed that the increase of water cortisol became less significant and occurred earlier along repeated applications of low concentration PAA. It indicates faster but reducing stress response of the carp. We conclude that peracetic acid at low concentration is an adaptable stressor to carp, and regular applications should cause no chronic stress. Regarding the fish welfare in aquaculture, low concentration of PAA is suitable to be applied regularly in recirculating aquaculture systems.