DEVELOPMENT OF NURSERY TECHNOLOGY OF FRESHWATER PRAWN (Macrobrachium rosenbergii)

The present study was conducted during June to December, 2010 with a view developing nursery technology respect stocking density optimization and survivability of prawn PL in earthen ponds. Hatchery obtained were reared commercial feed monitoring water quality for 14 weeks 12 ponds (1.25dec each) at Khulna University. Four densities viz., 958, 500, 800 1000 PL/dec used three replicates each. range temperature, DO, pH, alkalinity, hardness, ammonia phosphate the within acceptable limit. mean initial weight 0.005g. Net gains 2.069, 4.042, 2.680, 1.707g from four treatments, respectively. values specific growth rate 3.192, 3.550, 3.332 3.090% per day densities, Highest survival found 500 density. Second highest same PL/dec. However, 500- may be better nurseries, though there are scopes further improvement process through feeding trial and/or other aspects.