What is it about?
This study was conducted for a period of 45 days between August and October 2014 at Persian Gulf and Oman Sea Ecology Research Center (PGOSERI). The objective of this study was to evaluate the effects of integrated culture of Gracilaria corticata on shrimp performance, such as survival, growth rate and final production of Litopenaeus vannamei with different shrimp and sea weed densities under zero water exchange system. Growth parameters of shrimp and seaweed such as specific growth rate (SGR), weight gained (WG) and average daily growth (ADG) were computed based on the initial and final weight of shrimp and seaweed. According to the results, increasing in the density of G. corticata led to improve survival rate, reduce the wastage of the feed as sediments and reduce the FCR The red seaweed G. corticata can act as an artificial substrate that reduce the negative effect of high stocking density on shrimp growth in the tanks and boost growth rate parameters, survival rate and total production of L. vannamei under zero water exchange system. Negative SGR in G. corticata cultured in treatment C1 (seawater without any shrimp feed or fertilizer), indicated that shrimp culturing activity provide adequate dissolved nutrient for the growth of G. corticata in culturing tanks.
Why is it important?
Farming of whiteleg shrimp Litopenaeus vannamei has recorded rapid prevalence in almost every coastal province of Iran. Effluents from shrimp ponds may result in high pollution of coastal water body.One economical and feasible method that has been studied in recent years is the use of sea weed to maintain excellent quality of pond water in integrated culturing of shrimps and seaweeds. It is anticipated that nutrient should be absorbed by seaweed.
The following have contributed to this page: Dr Kiuomars Rohani-Ghadikolaei, Dr. Hojjatollah fourooghifard, and Maryam Mirbakhsh
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