Recirculating Aquaculture System Conditioning

Ranjan, Ritesh and SampathKumar, G and Bathina, Chinnibabu and Avadhanula, Ravi K (2022) Recirculating Aquaculture System Conditioning. In: Training Manual on nursery rearing of Indian pompano in Recirculating Aquaculture System. CMFRI Training Manual Series (28). ICAR- Central Marine Fisheries Research Institute, Visakhapatnam, pp. 46-51.

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ICAR- CMFRI Training Manual Series No. 28_2022_Chapter 5.pdf

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    A newly established recirculating aquaculture system should be conditioned before stocking of the live animal into the RAS tanks for the culture. It is necessary because fishes produce waste from the day of stocking as a result of the nutrition they receive. It is not only the waste produced from the fish but also from the waste generated due to feed and feeding activity. These wastes, mainly ammonia and nitrite are very toxic to the fish and are an environmental stressor that causes reduced appetite, reduced growth rate and death at high concentrations. These toxic waste needs to be removed from the system from the date of stocking otherwise will create problem to the stocked animals. To remove these wastes, the biofilter or biological filter, which form a key component in the filtration system of a recirculating aquaculture system (RAS) needs to be activated. The biofilter houses the nitrifying bacteria and is the primary site where biological nitrification occurs. Nitrifying bacteria converts toxic nitrogenous waste produced or excreted by the aquatic organisms into the simpler form, which is less toxic to the fishes.

    Item Type: Book Section
    Uncontrolled Keywords: RAS; Re-circulating aquaculture system
    Subjects: Aquaculture
    Divisions: CMFRI-Visakhapatnam
    Depositing User: Arun Surendran
    Date Deposited: 31 Mar 2023 08:28
    Last Modified: 31 Mar 2023 08:28

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