Antarctic krill (Euphausia superba) represents an exceptionally valuable yet relatively renewable source of nutrients for aquaculture. This raw material, derived from small crustaceans, contains high-quality proteins, essential amino acids, omega-3 fatty acids, chitin, and the natural antioxidant astaxanthin, which improves both fish health and coloration. Due to its high palatability and nutritional value, krill meal is becoming an attractive alternative to traditional fish meal, whose availability is limited. From a sustainability perspective, it offers a solution that can help protect marine resources while supporting the development of environmentally responsible aquaculture.
An international team coordinated by researchers from FROV JU analyzed data from 22 studies on 14 species of fish and crustaceans to assess the effects of krill meal on growth and feed efficiency. The results showed that the inclusion of this ingredient significantly increases growth rates and improves feed conversion, particularly in species such as sturgeon, cod, and trout. The team is currently in contact with Aker BioMarine and QRILL Aqua to discuss the possibility of updating the meta-analysis to include more recent data and more realistic levels of krill inclusion in feed formulations for commercially important fish species. Such an expanded analysis could better connect academic findings with practical needs and provide more accurate nutritional recommendations for different fish species.
This research bridges the gap between scientific evidence and its industrial application, offering new opportunities for specialized companies to strengthen their role in the sustainable aquafeed sector. On a societal level, the results support the use of krill as a premium, high-performance ingredient that helps meet sustainability certification standards (e.g., MSC or ASC Feed Standard). From a commercial perspective, this evidence-based validation offers a scientifically grounded case for investing in krill harvesting, processing, and utilization methods. The species-specific responses revealed by the meta-analysis enable targeted feed strategy development and "precision nutrition" for fish.
Detailed information can be found in the original article:
Tran Ouang, H., Nguyen Thi, T., Dvořáková Prokešová, M., Øverland, M., Gasco, L., Kumar, V., Van Doan, H., Stejskal, V., 2025. Impact of krill (Euphausia superba) meal on growth performance of aquatic animals: A meta-analysis and prospective directions. Animal Nutrition 20: 487–498.
