Kinerja Produksi Benih Ikan Jelawat (Leptobarbus hoevenii Blkr) Dengan Ketinggian Air Berbeda Pada Sistem Resirkulasi

Abstrak

This study aims to determine the optimal water level for the rearing of jelawat fish (Leptobarbus hoevenii blkr) with a recirculation system. This research was conducted for 60 days at the Telanaipura Ornamental Fish Installation Laboratory, Jambi Province Maritime Affairs and Fisheries Service. The study was conducted using a completely randomized design with 4 treatments and 3 replications covering a water level of 10 cm (A), a water level of 15 cm (B), a water level of 20 cm (C) and a water level of 25 cm (D). The results showed that the different water level treatments had a significant effect (P<0.05) on survival rate (SR), absolute weight growth (AWG) and feed conversion (FC). The highest percentage of survival was in treatment D (water level 25 cm) of 95.62%. The average SR value tends to increase with the increasing water content of the rearing medium. The lowest SR value was found in treatment A (water level 10 cm) of 87.38%. The average weight of fish at the beginning of the study was 0.12 ± 0.005 g/head, increasing at the end of the study to 0.88 ± 0.048 g/head. The average absolute lenght growth (ALG) and AWG ranged between 1.83g - 2.31g and 1.83g - 2.31g, respectively. The highest FC value was in treatment A (water level 10 cm) of 1.93 and the lowest FC value was in treatment C and D (water level 20 and 25 cm) of 0.79. Blood glucose values at the beginning of the study ranged from 44.33 mg/dL – 56.00 mg/dL while at the end of the study the blood glucose values decreased and ranged from 40.33 mg/dL – 45.00 mg/dL. The results of the analysis of the water quality of the rearing medium show that the water quality is still in the feasible range for the maintenance of barnet fish