Effect of alga chlorella vulgaris and yeast Saccharomyces cerevisiae, on growth, protein and total and free amino acid composition of rotifer Brachionus calyciflorus

In this study the effect of three dietary treatments including; two concentrations (106 and 107 cells per ml) of the freshwater alga Chlorella vulgaris and one treatment of baker's yeast, Saccharomyces cerevisiae) on growth, protein and total and free amino acid composition of freshwater rotifer Brachionus calyciflorus were studied. Results showed that rotifers fed with high concentration of algae (107cell/ml) had significantly higher growth rate (0.56 ± 0.03) than other treatments. Maximum density of rotifers fed high concentration (1790 ± 10.7 ind/ml) significantly was higher than low concentration (525±41.1 ind./ml) and baker's yeast ꈩ treatments (115±2.1 ind/ml). The crud protein of rotifers fed yeast was significantly higher than rotifers fed with low density of algae (p