The use of micro-algae as animal feed is more recent.
A large number of nutritional and toxicological evaluations
demonstrated the suitability of algae biomass as a
valuable feed supplement or substitute for conventional
protein sources (soybean meal, fish meal, rice bran, etc.).
The target domestic animal is poultry, mainly
because the incorporation of algae into poultry rations
offers the most promising prospect for their commercial
use in animal feeding. Another growing market is the utilization of micro-algae in aquaculture. It is estimated
that about 30% of the current world algal production is
sold for animal feed application.