“The shrimp industry is in pursuit of more sustainable and beneficial dietary feeds, and it is important to understand how functional ingredients, such as krill meal, can lead to better outcomes,” said Lena Burri, director R&D, animal nutrition and health, Aker BioMarine.
That Antarctic krill-harvesting company conducted the research along with experts based at India’s Central Institute of Brackishwater Aquaculture (ICAR).
Their newly released paper, published in the journal Aquaculture, concluded that krill meal is a beneficial functional ingredient when used in Whiteleg shrimp (Penaeus vannamei) feed.
The feeding trial found that inclusion of 4 to 6% krill meal in the diet can lead to higher body weight and greater survival among the shrimp.
The trial
Run from the ICAR facility in India, the eight-week feeding trial analyzed the impact of krill meal on shrimp diets with moderate (12%) and low (6%) fishmeal concentrations.
Varying amounts of krill, between 0 to 6%, were added to these diets, which the shrimp received three times daily throughout the experiment.
The findings suggest that shrimp fed 6% krill meal in the diet had the highest body weight at the end of the study. The team saw that shrimp survival was significantly increased in the groups fed 4% and 6% krill meal in the diet.
When 6% krill meal was included in the diet, the shrimp showed a higher content of n-3 polyunsaturated fatty acids, while 2% krill meal in a diet containing 12% fishmeal significantly increased the expression of six immune-related genes in the hepatopancreas of the shrimp, found the team.
Study: Krill meal shows potential as functional ingredient in shrimp feed - FeedNavigator.com
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