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  • 1
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    Water quality management on the enhancement of shrimp (Penaeus monodon Fab.) production in the traditional and improved-traditional ghers of Bangladesh (2021)
    In:  http://aquaticcommons.org/id/eprint/16444 | 12051 | 2015-03-27 09:21:14 | 16444 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: On-farm research on enhancement of P. monodon production through water quality management was carried out in five ghers of Paikgacha, Khulna. Based on the prevailing condition of the ghers, lime in the form of CaCO(sub 3), urea and TSP were used as the major inputs to minimize the soil-water acidity and to ensure the availability of natural food particles in the water bodies. Exchange of water at required level also practiced for the qualitative improvement of culture water. Ghers of varying sizes showed that water quality management and fertilization have a positive impact on production performance of P. monodon (61.59% increment) that yielded an average production of 385.43 kg/ha/crop against the present traditional rate of 238.50 kg/ha/year.
    Keywords: Aquaculture ; shrimps ; Penaeus monodon ; water quality ; traditional farming ; Bangladesh
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 63-68
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  • 2
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    Observation on the production performance of Penaeus monodon with Liza parsia under different cropping system (2021)
    In:  http://aquaticcommons.org/id/eprint/16457 | 12051 | 2015-03-27 09:15:51 | 16457 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: Study was conducted in six ponds each with an area of 0.1 ha in the pond complex of Brackishwater Station, Paikgacha, Khulna from February to October '96, to find out the variation of production rate in two culture system viz., single and double crop of P. monodon with L. parsia. In treatment T1 wild fry of P. monodon (0.006g) and L. parsia (0.20g) collected from nearby river were stocked at a rate of 40,000 and 10,000/ha, respectively, for a culture period of 120 days. In treatment T2, the rate was 20,000/ha for bagda fry in 1st and 2nd crop each and 10,000 for parsia fry/ha for an extended period of 225 days. The highest survivability and growth of P. monodon and L. parsia were 57.08% (1st crop of T2) and 75.26% (T2), and 27.08g (1st crop of T2) and 47.78g (T2), respectively with a significant variations (P〉0.05) with other treatment. The net profit (Tk. 93,134) and cost benefit ratio of 1:1.76 were also found higher in T2.
    Keywords: Aquaculture ; shrimp culture ; pond culture ; polyculture ; fish culture ; aquaculture systems ; Liza parsia ; Penaeus monodon
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 141-145
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  • 3
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    Optimization of stocking density for environmental-friendly improved extensive shrimp farming system in south-west part of Bangladesh (2021)
    In:  http://aquaticcommons.org/id/eprint/16427 | 12051 | 2015-03-27 09:34:18 | 16427 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: An experimental culture practice of P. monodon on extension approach was conducted in two brackish water earthen ponds of Demonstration Farm and Training Center (DFTC), Kaliganj, Satkhira. The experiment was aimed to provide farmers with appropriate technology that can immediately improve pond yield with keeping the environment in friendly condition. For optimization of stocking density of a cost effective environmental friendly improved extensive shrimp farming, the ponds were stocked with coastal river post larvae of P. monodon at the stocking rates of 2 pls/m² and 2.5 pls/m² without supplementary feeding. To control experimental error another five farmer's gher were used as replicates of each demo-pond. Considering the farmers buying ability, cost of inputs and other facilities kept minimal. The impact of stocking density was evaluated on the basis of growth, survival rate, production and economic return. Better production (average 299.01 kg/ha) with same survival rate (39.33%) were found with a stocking density of 2.5 pls/m² without causing any deterioration in the culture environment.
    Keywords: Aquaculture ; aquaculture economics ; stocking density ; shrimp farming ; extensive culture ; pond culture ; brackishwater aquaculture ; Penaeus monodon ; Bangladesh
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 137-143
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  • 4
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    Effect of submerged aquatic vegetation on growth and survival of Penaeus monodon (Fab.) (2021)
    In:  http://aquaticcommons.org/id/eprint/16428 | 12051 | 2015-03-27 09:25:12 | 16428 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: An experiment was conducted in brackish water ponds with transplanted aquatic weed (Najas sp.) to study the effect of submerged aquatic vegetation on culture of Penaeus monodon. Out of six ponds three were without any aquatic vegetation (T1) while in other three ponds weeds were planted covering 40% of the pond bottom (T2). Hatchery produced post larva of P. monodon (0.006 g) were stocked in all ponds at a density of 40,000/ha. Shrimps were fed twice daily with commercial and formulated feed prepared from locally available ingredients. After 105 days of rearing shrimp of highest average weight (63.18g) was obtained from T2 with a survival rate of 25.90% and the total production was obtained at 654.54 kg/ha. The average weight, survival and total production of shrimp in T1 were 35.0 g, 28.76% and 405.63 kg/ha, respectively.
    Keywords: Aquaculture ; rearing ; aquatic weeds ; shrimp farming ; pond culture ; brackishwater aquaculture ; Najas ; Penaeus monodon ; Bangladesh
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 145-149
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  • 5
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    Species diversification in coastal aquaculture: production potentials of shrimp (Penaeus monodon) with mono and mixed sex tilapia (2021)
    In:  http://aquaticcommons.org/id/eprint/18962 | 12051 | 2015-12-01 11:34:48 | 18962 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-12
    Description: An experiment of 120 days of culture was conducted in brackishwater earthen ponds having an area of 0.2ha each. The hatchery produced shrimp (Penaeus monodon) post larvae were stocked in the 40m² fine meshed nylon net nursery enclosures were fed with commercial pellet feed. After two weeks of nursing, juveniles were allowed to spread in cultural pond by opening the fence. Fingerlings of three different strain of tilapia were stocked as shrimp and Strain-1 all male (monosex) (T1), shrimp and Strain-2 all male (T2), shrimp and Strain-3 mixed sex population (T3) @ 20.000/ha and 10.000/ha, respectively and shrimp only (monoculture) (T4) @ 20.000/ha. The shrimp and fish were fed with farm made feed consisting of a mixture of fishmeal 29%, MOC 15%, rice bran 30%, soybean meal 16%, wheat flour 9% and vitamin premix 0.1%. The average final weight of shrimp was 24.9±1.13g, 23.41±3.26g and 26.67±1.89g that stocked with tilapia in treatments T1, T2, and T3 respectively. The final average weight of shrimp in monoculture (T4) was 27.41±0.76g, apparently higher but insignificant in treatments. The survival of shrimp was 42.17%, 32.38%, 39.45% and 61.98% in treatments T1 T2, T3 and T4 respectively. The production of shrimp in concurrent culture was 193.67, 154.26 and 210.41kg/ha in T1, T2 and T3, respectively, while in monoculture (T4) was 339.77 kg/ha. The growth and survival of tilapia among the treatments was insignificant. The growth of monosex tilapia ranged 225.29 and 291.31g and survival 62.77 and 72.20% in T1 and T2, respectively, in mixed sex was 193.0g and 83.20% (T3). The production of tilapia monosex strains was 1676.69kg/ha (Strain-2 all male) and 1668.98 kg/ha (Strain-1 all male) while that of Strain-3 mixed sex population was 1622.92 kg/ha.
    Keywords: Aquaculture ; Biology ; Penaeus monodon ; species diversification ; monosex tilapia ; mixed coast tilapia ; coastal aquaculture
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 179-184
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  • 6
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    Effect of farm made feeds on polyculture of shrimp (Penaeus monodon) and three brackishwater finfish species (2021)
    In:  http://aquaticcommons.org/id/eprint/17696 | 17292 | 2015-09-13 06:09:28 | 17696 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-06-27
    Description: A study was conducted to evaluate the effects of feed made from locally available ingredients on polyculture of shrimp and three brackishwater finfish species. Hatchery produced post-larvae (PL) of shrimp Penaeus monodon (0.005g) were stocked at the rate of 15,000 PLs/ha. Brackishwater finfish species Liza parsia, Mugil cephalus andRhinomugil corsula of 0.63-1.4lg collected from local rivers were stocked at the rate 8,000, 1,000 and 2,000/ha, respectively in four treatments. Shrimp and finfishes were fed four different experimental diets composed of fish meal, mustard oil cake, rice bran, oyster shell power and vitamin premixes at the rate of 3-5% estimated crop/day for 195 days. Among four treatments, P. monodon showed comparative better growth in T4 and T3. Finfish L. parsia showed its better performance in treatment T2. Species M. cephalus and R. corsula showed insignificant production. P. monodon showed better growth with diet of fish meal and mustard oil cake@ 28.84 and 33.65%, respectively in T 3 and 19.22 and 43.27%, respectively in treatment T4.
    Keywords: Biology ; Fisheries ; P. monodon ; L. parsia ; M. cephalus ; R. corsula ; Feed ; Polyculture
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 77-82
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  • 7
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    Culture feasibility of silver barb (Barbodes gonionotus Bleeker) and GIFT with shrimp (Penaeus monodon Feb.) in brackishwater pond (2021)
    In:  http://aquaticcommons.org/id/eprint/17799 | 9 | 2015-09-11 14:44:58 | 17799 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-06-30
    Description: An experiment was conducted to understand the culture feasibility of sliver barb(Barbodes gonionotus) and GIFT (Genetically Improved Farmed Tilapia) with shrimp(Penaeus monodon). There were three different treatment (T) combinations: (T1) shrimp(10,000/ha) and silver barb (10,000/ha), (T2) shrimp (10,000/ha) and GIFT (10,000/ha),and (T3) shrimp (10,000/ha). Shrimp, after 120 days of culture, attained an average weightof 23.77g in T1, followed by T3 (23.70g). The highest average weight was recorded in T2(24.93g). The specific growth rate (SGR) of shrimp was 6.9%, 6.94% and 6.9% for T1 T2and T3, respectively. The SGR for the B. gonionotus and GIFT was 2.56% and 4.26%,respectively. The final weight of silver barb was 69.75g and that of GIFT was 161.83g.Survival of shrimp was higher (65.50%) in T2, followed by T3 (59.97%) and T1 (57.03%).Survival rate of silver barb (58.10%) was lower compared to that of GIFT (78.43%).Sporadic and scanty mortality of silver barb with a symptom of blind-red-protruded eye,swollen belly and body lesion was observed. Production of shrimp was higher of 284.05kg/ha in monoculture, followed 162.47 kg/ha in concurrent culture with silver barb and136.77 kg/ha culture with GIFT. In spite of similar stocking density of B. gonionotus andGIFT in T1 and T2, respectively, the production of GIFT was higher (1272.95 kg/ha)than that of silver barb ( 402.72kg/ha). Survival, final weight and production rates ofshrimp among the treatments were found insignificant while total production ofshrimp/fish was found to vary significantly (P〈O.Ol). Benefit cost ratios (BCR) were1.04:1.0, 1.32:1.0 and 2.05:1.0 in the T1 T2 and T3, respectively. Results indicate that,concurrent culture of B. gonionotus and shrimp will be less prospective in comparison toculture of GIFT and shrimp in brackish water environment with a salinity range of 9 to14%o.
    Keywords: Biology ; Chemistry ; Fisheries ; Penaeus monodon ; Barbodes gonionotus ; GIFT ; Brackish water
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 69-74
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  • 8
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    An observation of performances in carp-prawn polyculture in respect of fingerlings size and water area (2021)
    In:  http://aquaticcommons.org/id/eprint/17863 | 9596 | 2015-09-13 10:38:06 | 17863 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-01
    Description: Performances of fingerling size and water area was studied. Seven species of fish included25% of Hypophthalmichthys molitrix, 15% of Gada catla, 20% of Labeo rohita, 10% ofCirrhinus mrigala, 10% of Ctenophyringodon idella and 20% of Macrobrachiumrosenbergii were stocked at the rate of 8,000 individual/ha along Barbodes gonionoms at6.0g weight size with a stocking density of 2,000 indl./ ha.Survival of all species was in the range of 39.9 to 96.3% except M. rosenbergii Thehighest survival was obtained from L. rohita (96.3%) followed by C mrigala (96.0 %)., B.gonionotus (92.3%), C idella (90.6%), H. molitrix (84.0%), C cada (81.7%) respectively.While the survival of M. rosenbergiiwas 13.1%. The highest production of 4912 kg/ha/yrwas obtained from the bigger ponds (0.4 ha) stocked with 20-32g size of fingerlings, whilelowest production (3123 kg/ha/yr) from small pond (0.1 ha) stocked with 3-10 gfingerlings. Economic analysis shows the highest net profit in bigger ponds stocked withbigger fish seed.
    Keywords: Aquaculture ; Fisheries ; Polyculture ; Fingerling size ; Water areas
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 187-190
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