Internal disinfection of fish eggs: If fish eggs are hatched in high densities in fish farms, it is necessary to reduce the bacterial count of pathogens present in and on the egg. Special methods with iodine-containing preparations (iodophores) are used for this purpose.
In order to be able to disinfect not only the egg surface but also the inside of the freshly fertilized eggs, these must not come into contact with water, as then the egg shell becomes impermeable and the disinfectant can no longer penetrate. Since the disinfectants are toxic to the fish eggs when overdosed and when exposed for too long, it is necessary to determine the exact time of disinfection and the exact concentration and exposure time at which the highest possible effect can be achieved.
These methods are important in aquaculture to reduce the use of disinfectants and to make production more sustainable and environmentally friendly.
Testing of disinfectants for fish eggs
When fish eggs are incubated at high densities in fish farms, it is necessary to reduce the bacterial count of pathogens present in and on the egg.