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The efforts of the catfish hatchery fish are generally confined to the central areas of hatchery that has abundant water  resources. Solving  the  problem of  limited water, appears a catfish  hatchery  system with  a  closed  recirculation  system.  In  such  systems  the  process  of  biological  filtration  is  the  most important thing. It shows the handling of organic materials by utilizing the degrading bacteria  is the key to  successful management  of  the  system.  Thus  necessary  to  be  studied  the  role  of  bacteria  degrading organic matter indigen (local bacteria) in the closed hatchery  recirculation system of catfish.  This study aimed  to obtain bacterial  strains degrading bacteria  indigen as organic materials are very useful in improving water quality in the closed hatchery  recirculation system of catfish and knowing the methods to the use of bacteria indigen as degrading organic matter. The method used in this study was designed based on the stages of research carried out in accordance with the objectives to be achieved.   The results of  the  isolation and  identification  to the species  level showed Pseudomonas stutzeri and  Pseudomonas  pseudomallei  obtain  the  greatest  value  for  hydrolysis  index  representing  each  trait protease,  lipase  and  amylase. Bioremediation  effectiveness  test  in  vitro  showed  effective  results  in  the treatment using consortia of bacteria inoculant. Consortia of bacteria inoculant effective in improving the growth rate and survival rate (SR) in the closed hatchery  recirculation system of catfish.

jurnal ilmiah perikanan dan kelautan/jurnal ilmiah perikanan dan kelautan

Eksplorasi Bakteri Indigen pada Pembenihan Ikan Lele Dumbo (Clarias sp.) Sistem Resirkulasi Tertutup &lt;br&gt;&lt;i&gt;[Exploration Of Indigen Bacteria From Catfish (Clarias sp.) Breeding On Closed Resirculation System ]&lt;i&gt;