The effect of replacement of sea water with sea salt in the larval rearing of the freshwater prawn Macrobrachium rosenbergii de man

Ang K.J., . and Cheng E.M., . (1997) The effect of replacement of sea water with sea salt in the larval rearing of the freshwater prawn Macrobrachium rosenbergii de man. [Proceedings Paper]

A study was undertaken to determine the feasibility of replacing sea water with sea salt in the culture of the freshwater prawn larvae Macrobrachium rosenbergii by using the modified static water system. The larvae were cultured using five combinations of saltwater Sa W to sea water Se W: 0 Sa W control 50 Sa W 60 Sa W 70 Sa W and 100 Sa W. Each treatment has 3 replicates at a density of 30 larvae/L. When 90 of the larvae metamorphosed to post larvae PL the experiment was terminated. Further observations were continued up to PL21 to determine their survival and growth rates under the different treatments. The survival rates of the larvae for treatments 0 0.5 0.6 70 and 100 Sa W were 78.61 - 1.04 72.85 - 1.81 49.54 - 3.95 50.89 - 3.03 and 0.0 respectively. There is no significant difference p greater than 0.05 in survival rate total length and wet weight between control and 50 Sa W but it was significant p less than 0.05 between control and 60 and 70 Sa W. The survival rate of PL21 taken from 0 0.5 60 and 70 treatments were 90.42-0.72 86.67-1.74 83.42-2.55 and 85.42-2.49 respectively. There is no significant difference between the control and the 50 treatment p greater than 0.05 in the survival rates total length and wet weight but there is significant difference p less than 0.05 between the control and the 60 and 70 Sa W. Based on this study it may be concluded that up to 50 of sea water can be replaced by salt water in culturing the giant freshwater prawn larvae.

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Abstract

A study was undertaken to determine the feasibility of replacing sea water with sea salt in the culture of the freshwater prawn larvae Macrobrachium rosenbergii by using the modified static water system. The larvae were cultured using five combinations of saltwater Sa W to sea water Se W: 0 Sa W control 50 Sa W 60 Sa W 70 Sa W and 100 Sa W. Each treatment has 3 replicates at a density of 30 larvae/L. When 90 of the larvae metamorphosed to post larvae PL the experiment was terminated. Further observations were continued up to PL21 to determine their survival and growth rates under the different treatments. The survival rates of the larvae for treatments 0 0.5 0.6 70 and 100 Sa W were 78.61 - 1.04 72.85 - 1.81 49.54 - 3.95 50.89 - 3.03 and 0.0 respectively. There is no significant difference p greater than 0.05 in survival rate total length and wet weight between control and 50 Sa W but it was significant p less than 0.05 between control and 60 and 70 Sa W. The survival rate of PL21 taken from 0 0.5 60 and 70 treatments were 90.42-0.72 86.67-1.74 83.42-2.55 and 85.42-2.49 respectively. There is no significant difference between the control and the 50 treatment p greater than 0.05 in the survival rates total length and wet weight but there is significant difference p less than 0.05 between the control and the 60 and 70 Sa W. Based on this study it may be concluded that up to 50 of sea water can be replaced by salt water in culturing the giant freshwater prawn larvae.

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Item Type:	Proceedings Paper
AGROVOC Term:	MACROBRACHIUM ROSENBERGII
AGROVOC Term:	FRESHWATER CRUSTACEANS
AGROVOC Term:	PRAWNS AND SHRIMPS
AGROVOC Term:	LARVAE
AGROVOC Term:	SEA WATER
AGROVOC Term:	SALINE WATER
AGROVOC Term:	GROWTH RATE
AGROVOC Term:	SURVIVAL
AGROVOC Term:	PRODUCTION
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16113

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