Antarctic Krill (Euphausia suberba) is one of the most abundant marine resources. Various industries have employed the use of Krill products over the years including:
• Products for Human food consumption and neutraceuticals.
• Animal feeds (predominantly aquaculture).
• The sports fishing industry, including carp bait manufacture in the UK.
Desirable nutritional qualities of krill include:
• high crude protein content
• Omega-3 fatty acids.
• natural carotenoid pigments
Krill has successfully been included as a highly palatable material within aquafeeds containing high levels of vegetable based alternatives to marine resources such as fishmeal and fish oil and those containing chemotheraputants and antibiotics. Protease enzyme of krill is typically very active so under strict quality control and storage procedures; enzyme accelerated hydrolysis is employed to create a soluble protein hydrolysate.
Krill hydrolysate itself has proved to be an immense fish attractant in aquaculture feeds, increasing feed intake with various species between 5-200% in aquafeed trials and significantly increasing growth also.