Salinity Tolerance Level of GIFU Tilapia Strain at Juvenile Stage : in a Commercial Tilapia Hatchery, Mannan Nagar, Noakhali

ISBN-13: 9786139460793 / Angielski

Md. Monjurul Hasan; K M Shahriar Nazrul

Opis

An experiment was conducted to determine the salinity tolerance level at juvenile stage of Nile tilapia strain, GIFU Tilapia in a Commercial Tilapia Hatchery, Mannan Nagar, Noakhali. The growth performance and survival rate were assessed at 0ppt, 0ppt black, 5ppt, 10ppt, 15ppt salinity. A total of 150 hatched fry of GIFU tilapia (0.039g/fry) were stocked in 15 jars of 10 liter capacity for the experiment after the absorption of their yolk sac. Feed were given at a rate of 13% of total body weight per day containing 40% crude protein. Room and water temperature was maintained at 30.0 ±2°C and 28.0 ±2°C respectively. Water was exchanged at the rate of approximately 30% per day. At the end of experiment (24 days) result showed that highest growth and survival rate of fry found was in 0 ppt salinity and the lowest was in 15 ppt salinity. The obtained results clearly indicate that GIFU Tilapia is very much intolerable to higher salinities at juvenile stage.

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O autorze

Hasan, Md. Monjurul
Md. Monjurul Hasan received his B.Sc. in Fisheries and MS in Aquaculture from Department of Fisheries and Marine Science, Noakhali Science and Technology University (NSTU). He is now serving his country as a Scientist at BFRI under MoFL. He is interested in Fish biodiversity and it's conservation management in the open water.