There has been a very rapid global expansion of freshwater prawn
farming since 1990; this is mainly because of the huge production
of China but also, in the last few years, because of a rapid
take-off of farming in India and Bangladesh. Survival at the end of
the nursery phase can vary substantially and may be related to the
territorial and cannibalistic nature of prawn PLs when cultured at
high densities. Nursery production may be enhanced by the addition
of artificial substrates. Seed cost is a dominant variable cost in
prawn production. Thereby, cost efficiency of nurseries
significantly impacts the prices of stocker size juveniles, which
in turn has a dramatic influence on the profitability of prawn
grow-out. Therefore, investigation into potential benefits derived
from using artificial substrates, a study was conducted in
recirculatory system to evaluate the effects of substrates on the
growth and survival of Macrobrachium rosenbergii postlarvae (PL).
Result of the present study indicated that growth of M. rosenbergii
PLs improved in presence of artificial substrates but the
artificial substrates did not improved survival.
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