Abstract:

Indoor rearing of silver pomfret (Pampus argenteus Euphrasen) fingerlings cultured under three temperature regimes during winter months in Kuwait was evaluated for growth and survival in fiberglass tanks. Thirty fish with mean weights of approximately 10 g were stocked in each fiberglass tank (water volume = 500 L). Three tanks were assigned to each of the three sea water temperature regimes: ambient, 25oC and 30oC. Under controlled water temperature regimes, heat exchangers were installed and set to the desired water temperature of 25oC and 30oC. Water flowed through each tank at the rate of two L/min. The fish were fed at satiation rate five times a day at two hours interval starting at 0800 h, six days a week with turbot pellet (Ecostart 15 by Biomar of France). The experiment was conducted for 154 days. Growth rates of fish under controlled temperature regimes were significantly higher than those under ambient temperature regime (P0.05). Survival rate of fish was highest at 25oC (66.7%) followed by fish at 30oC (62.2 %) and the lowest was those at ambient temperature regime (40.0%). Survival rates of fish reared at water temperatures of 25oC and at 30oC did not differ significantly (P>0.05) but were significantly higher than those reared at ambient temperature regime (40.0%). Based on the results of this study, it is apparent that silver pomfret should be cultured in sea water with temperature close to 25oC during winter in Kuwait to obtain better growth and survival.

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Date 2003/01/01

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