Lien, N.T.K., T.T. huy, N.T. Phuong (2008). Culture of rotifer (Brachionus rotundiformis) (super small type) using Chlorella and Baker’s yeast as feeding diets. Scientific Journal of Can Tho University, Specific Issue on Aquaculture and Fisheries 2008(1): 67-74. (Full paper in Vietnamese).
A study was conducted at College of Aquaculture and Fisheries, Can Tho University to investigate food preference for Rotifer (Brachionus rotundiformis-SS) culture. One experiment was designed in a room with controlled conditions including temperature (28-30oC), salinity (25 ppt) light intensity (2,000 lux) and continuous aeration. Two treatments were randomly set up in 100 L composite tanks with 3 replicates each, consiting of (i) Chlorella (40,000 cells. rotifer-1. day-1) and (ii) baker’s yeast (0.3 gr. million rotifer-1. day-1). Rotifers were stocked at a density of 200 ind.mL-1. The results showed that the rotifer densities in both treatments were similar. After 8 days of culture period, rotifers in the Baker’yeast and Chlorella treatments obtained a final mean density of 893±50 ind. mL-1 and 873±50 ind.mL-1, respectively. At the same time, specific growth rate of 0,2±0,16 and 0,1±0,15 were found for both treatments, respectively. Egg ratio observed in Baker’ yeast treatment was 25,5±7,32% and similarly in Chlorella was 26,0±6,91%.