ON THE ENVIRONMENT FRIENDLY IMPROVED EXTENSIVE CULTURE OF  PENAEUS MONODON

M.N.  Ahsan; M.G.  Sarower; S.M.B.  Rahaman; M.A.  Sayeed; M.N.  Islam

doi:10.53808/KUS.2000.2.1.91-96-Ls

Authors

M.N. Ahsan Fisheries Technology Department, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
M.G. Sarower Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
S.M.B. Rahaman Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
M.A. Sayeed Fisheries Technology Department, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
M.N. Islam Fisheries Extension Officer, Department of Fisheries, Satkhira, Khulna, Bangladesh

DOI:

https://doi.org/10.53808/KUS.2000.2.1.91-96-Ls

Keywords:

Penaeus monodon; Shrimp culture; Aquaculture; Environment friendly; Improved extensive; Fertilizer

Abstract

A six months long study on the improved extensive culture of tiger shrimp (Penaeus monodon) was carried out in six ghers (ponds) under three treatments (T1-without feed and fertilizers; T2-only fertilizer; T3- with feed and fertilizers). The stocking density of post-larvae (PL) with a mean initial weight of 0.04±0.01g was 20,000 PLs/ha for T1 and T2 and 33,000 PLs/ha for T3. DO and pH in different ponds ranged from 4 to 13 mg/l and 7.3 to 8.6, respectively with a wide range of fluctuations in salinity levels (5 to 24 ppt) throughout the study period. The survivability rate was highest (54%) in T2 and lowest (38.5%) in T1, while the highest production (570 kg/ha/crop) was obtained in T3 followed by T 2 (372.5 kg/ha/crop) and T1 (236.8 kg/ha/crop). However, no significant (p>0.05) differences were observed between the specific growth rates of shrimp in different treatments, which ranged between 4.15 and 4.45.

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