Efficiency of Bio-filtration in Recirculating Nursery System for Pacific White Shrimp (Penaeus vannamei) Production
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Abstract
This study aimed to investigate the efficiency of a bio-filtration model in a
recirculating nursery system which was used in a Pacific White Shrimp (Penaeusvannamei)
nursing pond. Three parameters were examined which were water quality, growth rate
(increased length, weight) and average daily growth (ADG), and survival rate. There were two
treatments with three replications.Treatment 1 was shrimp nursing with bio-filtration in a
recirculating system andtreatment 2was regular water exchange. The shrimp (PL. 20) were
stocked in 3 square meter concrete ponds at a density of 312 pieces/square meter. The
experiment lasted for 30 days. The study results showed that the water quality namely
ammonia, nitrite, pH alkalinity, temperature and salinity were not significantly different
between treatments. They were allin optimum levels for nursing Pacific white shrimp.
Growth and survival of the shrimp were not significantly different between treatments
(P>0.05).
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