Biosecurity in AquaSearch ova ApS consists of practices minimizing the risk of introducing an infectious disease and spreading it to the animals at a facility. Additionally to minimize the risk that diseased animals or infectious agents will leave a facility and spread to other sites and to other susceptible species.
These practices also reduce stress to the animals, thus making them less susceptible to disease.
Obtaining healthy animals (eggs, fry, juveniles, broodstock) from a reputable supplier is critical. Work with a professional to determine species-specific health parameters and diseases of concern. Before obtaining animals from an outside source, have knowledge about their health, where they come from and have they had any disease issues. Important also to know whether they have had any health examinations, disease testing or treatments.
Some suppliers offer animals that have tested free of specific pathogens and these animals are preferable. If information about animal health is unavailable or unclear, fish should be tested shortly after they are received.
Danish Aquaculture Health Surveillance System
1 Surveillance expertise The Competent Authority for animal health is the Danish Veterinary and Food Administration (DVFA) of the Ministry of Food, Agriculture and Fisheries. Within the DVFA, the Animal Health Division is responsible for animal health, animal health surveillance, veterinary epidemiology, veterinary preparedness, health management, etc.
2. Surveillance program and activities The aquatic animal health surveillance in Denmark is based on the obligation to notify suspicion of animal diseases, the obligation to notify increased mortality, routine inspections and laboratory examinations of surveillance samples and last but not least: Historical freeness of disease of the entire location.
2.1 The obligation to notify suspicion of animal diseases The Danish list 1 & 2 of notifiable diseases includes the following fish diseases: EHN, EUS, SVC, VHS, IHN, ISA, KHV, BKD and IPN. According to the Animal Health Act, any farmer and veterinarian is obliged to call an official veterinary officer right away if he suspects a notifiable disease.
2.2 The obligation to notify increased mortality According to § 6 of Executive Order No. 968 of 18 July 2013, a person responsible for aquatic organisms shall, if an increased mortality in aquatic organisms is registered, immediately call a veterinarian or notify it to DVFA.
2.3 Routine inspections During the regular routine inspections conducted as part of the official surveillance, all farm facilities (cages, tanks and ponds) are checked for dead, weak fish and fish showing abnormal behavior. Where possible the newly dead fish, weak fish and fish with abnormal behavior examined for clinical signs or necropsy signs of a contagious fish disease.
2.4 Laboratory examinations of surveillance samples Brood stock farms are inspected min. twice a year and samples are taken in connection with each inspection. Targeted surveillance is carried out at brood stock farms which are registered free of IPN and BKD.
2.5 Historical freeness from disease Licensed disease free brood stock farms can only be approved as such, if the location has been historically free from specific disease since the initial stocking of the site.
3 Surveillance design Brood stock farms are inspected twice a year, and samples are taken in connection with each inspection. Brood stock farms are always located as first aquaculture operation in a watercourse and either use borehole water or spring water as water supply or other water source protected from the disease risk from wild fish.