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    Performance of recirculating systems for prawn hatchery and broodstock maturation tanks

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    Date
    1991
    Author
    Millamena, Oseni M.
    Casalmir, C.M.
    Subosa, Precilla F.
    Page views
    1,343
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    Abstract
    The potential use of recirculating systems with facilities for waste removal for prawn (Penaeus monodon) hatchery and broodstock maturation tanks was investigated. Recirculating systems evaluated for larval culture tanks were biological filtration and zigzag stream sedimentation. Systems using airlift and airstones as aeration devices with partial water change but with no provision for recirculation served as control. Results showed successful rearing of Penaeus monodon (nauplii-postlarvae) in systems with facilities for wastewater recirculation. Aeration systems became ineffective in maintaining acceptable water quality as shown by increases in 5-day biochemical oxygen demand (BOD5), ammonia (NH4-N) and nitrite (NO2-N) nitrogen, and decreases in dissolved oxygen (DO).

    For broodstock maturation, a recirculating system with a preconditioned biological filter was compared with a flow-through system. Biological filtration proved to be useful in meeting water quality requirements. Nitrification was satisfactory with ammonia levels lower than 1·0 mg liter−1. The pH values in the biofilter effluent were maintained at 7·8–8·3. BOD5 levels were below 10 mg liter−1 while DO tended to drop due to the nitrifying activity of the filter. Better reproductive performance of Penaeus monodon broodstock was obtained in the recirculating system than in the flow-through system.
    URI
    http://hdl.handle.net/10862/1344
    Suggested Citation
    Millamena, O. M., Casalmir, C. M., & Subosa, P. F. (1991). Performance of recirculating systems for prawn hatchery and broodstock maturation tanks. Aquacultural Engineering, 10(3), 161-171.
    DOI
    10.1016/0144-8609(91)90021-B
    Type
    Article
    ISSN
    0144-8609
    Subject
    Brood stocks; Hatcheries; Shrimp culture; Recirculating systems; Penaeus monodon
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    • Journal Articles [1100]


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