Effect of sediment nitrate on content of sulfide and intensive growing performance of black tiger shrimp (Penaeus mondon Fabricus) in the earthern ponds
2005
Putth Songsangjinda(Department of Fisheries, Bangkok (Thailand). Songkhla Coastal Aquaculture Research Institute) | Usanee Ekpanithanpong(Department of Fisheries, Bangkok (Thailand). General Research Administration and Cooperation Unit)
This investigation research was conducted in order to understand the effect of sediment nitrate on the content of acid volatile sulfide and intensive growing performance of black tiger shrimp in the earthen pond. Eight shrimp ponds of two commercial farms located in Songkhla and Pattani provinces were selected for this study. Water and sediment samplings and growing performance had been collected from the ponds every 2 weeks since January 15, 2004 for about 19 weeks. Water samples were analyzed for salinity, dissolved oxygen, pH, alkalinity, nitrogenous compounds, organic carbon, and oxygen production and consumption. While, the sediment samples were analyzed for pH, total nitrogen, total organic carbon, acid volatile sulfide (AVS) and sediment oxygen demand (SOD). The results from water and sediment qualities analysis were found that pH, dissolved oxygen and sediment nitrate were slightly different among these two farms. On the other hand, sediment oxygen demand and acid volatile sulfide were significantly different. The AVS/SOD index showed a good negative correlation with sediment nitrate and shrimp growth, but positive correlation with decreasing of FCR. A suggestion from this study is that the AVS/SOD value of sediment in an intensive black tiger shrimp pond is able to use as the index for shrimp pond bottom management for the good growth, feeding and low FCR.
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