| Naga
- The *ICLARM Quarterly
Vol.
23, No. 3 (July - September 2000)
Features
Development
of Giant Freshwater Prawn Broodstock
K.
N. Mohanta
Abstract
The commercial success of a giant freshwater prawn
(Macrobrachium rosenbergii) hatchery depends
upon the uninterrupted supply of the desired quantity
and quality of broodstock. This study was an attempt
to develop the broodstock near a hatchery, to
be used for seed production throughout the year.
The hatchery produced seed were stocked at the
rate of 3/m 2 after initial pond preparation.
The prawns were fed with a pelleted diet (3 mm
size) prepared by using locally available feed
ingredients. The seed had an initial weight of
0.30 g and attained an average weight of 92.0
g and 62.0 g in males and females, respectively,
within 11 months. Berried prawns were observed
starting from the month of June (5%), after six
months of stocking, with a maximum in September
(60%). The percentage of berried prawns increased
from June to September when the water temperature
was optimum and decreased from December when it
got cold. The broodstock developed in this experiment
could be used in the hatchery after six months
of stocking, and brooders could be used to produce
seed for two seasons before being sold in the
market.
K.N. Mohanta
is from the Central Institute of Freshwater Aquaculture,
Kausalyaganga, Bhubaneswar, Orissa, India 751002
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