سعید حاجی رضایی

The aim of the present study was a preliminary experiment on marine culture of Asian sea bass in the shrimp earthen ponds of Gwadar region (a region located in the coastal area of Oman Sea, southeastern of Iran). To this end, Asian sea bass frys reared for 7 months including 1 month nursery and 6 months growth-period. During the culturing periods, fish were fed ad libitum by commercial rainbow trout diets based on fish growth stages. After nursery period, the average weight (AW) of 11.05 ± 1.5 g and survival per cent of 65% obtained for fish. During the growth-out period, the AW increased continually from 31.4 ± 4.7 g in late June to 252.1 ± 30 g at the end of growth-out period in late December. Also, the highest values of monthly weight gain yielded during August, September and October when fish had the AW range of (76.9 ± 14.4) – (188.1 ± 12.8) g. The values of monthly feed conversion ratio (FCR) were low and similar from July to October and then increased in November and December. The values of total monthly feed intake (FI) increased continually from July to October and then with a decrease in November, increased again in December. The values of survival per cent after nursery and growth-out period were 65% and 66%, respectively. Also, the average of monthly FCR, FCR at the time of fish harvesting, total FI and total harvested biomass were 1.36, 2.5, 630.5 kg and 325 kg.