red algal biomass did not affect their body weight, egg production rate, or egg weight, but lowered egg yolk cholesterol levels by 24%. Up to a third of soybean meal was successfully replaced in the diets of weanling pigs by algae biomass from the cyanobacteria S. maxima, Arthrospira platensis, and Chlorella sp. Other studies showed that supplementing the de-fatted biomass from the algae specie Staurospira sp.