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Optimization of Stocking Rates of Shrimp (P. monodon) with Brackishwater Finfish in a Polyculture System

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Author(s): A.F.M. Shofiquzzoha | M. L. Islam | S. U. Ahmed

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 1;
Issue: 8;
Start page: 694;
Date: 2001;
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Keywords: Brackishwater | polyculture | stocking rate | p. momodon | Liza parsia | mugil cephalus | rhiomugil corsula | growhth and survival

ABSTRACT
An experiment was conducted in nine earthen ponds each of 0.2 hector. Hatchery produced post larva (PL) of Penaeus monodon (1.14 cm, 0.005 g each) were stocked @ 10000, 12500 and 15000/ha in the treatment T1, T2 and T3 respectively. Brackishwater finfish species, such as, Liza persia, Mugil cephalus and Rhinomugil corsula of initial average length 4.62, 4.22, 3.94 cm respectively and weight 1.41, 1.22, 0.63g respectively, were collected from local rivers and stocked at invariable rates of 8000, 1000 and 2000 individuals/ha in all the treatments. The stocking of finfish was performed during May to mid October. Country produced commercial feed was applied twice a day @ 5-3% of the estimated crop and culture period was continued up to 195 days. The final mean weight of P. monodon at harvest was 38.81, 32.79 and 37.69 g for the treatments T1, T2 and T3 respectively. Specific growth rate (SGR%), survival and total production in treatments are found insignificant. The growth of shrimp P. monodon, finfish M. cephalus and L. persia is significant while level; growth for species R. corsula, was found insignificant.
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