Abstract
Abstract The use of fishmeal (FM) and fish oil in aquafeeds is a major challenge in the development of aquaculture. The discovery of alternative ingredients for aquaculture feedstuffs will allow for the sustainable growth of this activity. The cyanobacteria Arthrospira ( Spirulina platensis ) contains high quality protein and also immune-stimulatory properties that have been tested in mammals, fish and crustaceans. The purpose of this work was to evaluate the growth and immunological parameters of the white shrimp Litopenaeus vannamei when it was fed experimental isonitrogenous diets (~ 35% protein), containing 0%, 25%, 50%, 75% and 100% cyanobacteria A. platensis replacing fishmeal for 50 days. At the end of the experiment, there were no significant differences ( p A. platensis without affecting survival or creating a growth depression. Moreover, the smaller substitution level (25%) promoted an enhancement of the tested immunological parameters.
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