بررسی پرورش مقدماتی ماهی شانک با استفاده از غذاهای مصنوعی آماده در استخرهای خاکی در منطقه چویبده آبادان

This study has been carried out to evaluate the possibility to culture shanak (yellow fin seabream:Acanthopagrus latus)fish in the ground pond. The study including two experiments. In the first experiment two commercial available feeds (403 as shrimp food and F.F.T as trout food both preduced by Chineh company) are used to evaluate the growth performance of the bream Juvenile produced artificially in the Bandar Imam Mariculture Research Stationin weghing 2.72- 3.54 g. To perform the first experiment 6 ground ponds each with 0.25 ha area are used as replicates 3 ponds randomly allocated to each food. 5000 in dividual juvenile fishes are stocked in each pond. After 116 days rearing period well growth performances are achieved for both food with no significant difference (P 0.05) between them, although better growth perforrmances are observed for F.F.T food. The final weght ( WE), SVR ,FCR and SGR of shanak for F.F.T food respectively were 23.29 11.14, 95.98% 0.78, 1.39 0.26 and 3.47 0.23 where for 403 food were 22.08 9.95 , 89.67% 8.75 , 1.53 0.12 and 3.25 0.33 respectively. In the scond experiment in which only trout food was used th target was to examine the growth parametres of shanak juvenile in a full rearing period (198 days) in the ground pond. Juvenile fishes with 36.53 g were used with same methods adopted for the first experiment. The final weight of 206.3 g is achived by 89.35% SVR and 1.92 of FCR. Results of this experiment showed that the growth quickly improved with fast rate along with the increment of temperature and salinity up to 25؛ C and 14 ppt respectively . There after by the raising the temperature and salinity more than 25 ؛ C and 14ppt respectively the growth reduced. Key words: Yellow fin seabream, culture, ground pond. commercial food.