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Pengaruh Penambahan Enzim Bromelin Pada Pakan Buatan Terhadap Pertumbuhan Dan Kelulushidupan Benih Ikan Jelawat (Leptobarbus Hoevenii) Dengan Sistem Resirkulasi
This study aimed to determine the effect of bromelain enzyme added to feed at different doses on the growth rate of hoeven's barb (Leptobarbus hoevenii) using a recirculation system. The research was conducted from September to November 2023 at the Faculty of Fisheries and Marine Sciences, Riau University. The experimental method was employed with four treatment levels and three replications. The treatment levels included P0 = no addition (control), P1 = addition of enzymes at a dose of 10 g/kg feed, P2 = addition of enzymes at a dose of 15 g/kg feed, and P3 = addition of enzymes at a dose of 20 g/kg feed. A total of 240 catfish fry measuring 5-7 cm were utilized in the study. The results indicated that bromelain enzyme significantly influenced the growth rate of catfish fry. The optimal dose observed was 15 g/kg feed, resulting in an absolute weight of 7.99 g, absolute length of 4.70 cm, specific growth rate of 1.98%, feed conversion ratio of 2.47%, feed digestibility rate of 0.55%, and survival rate of 100%. The water quality parameters recorded during the study period supported the growth and survival of catfish: temperature ranged from 27.0 to 28.13°C, pH ranged from 6.03 to 7.86, dissolved oxygen ranged from 5.93 to 6.6 mg/L, and ammonia ranged from 0.00062 to 0.00218 mg/L. In conclusion, the addition of bromelain enzyme to feed significantly (P < 0.05) affected the growth and survival of hoeven's barb (Leptobarbus hoevenii).
Keywords : Hoeven's barb, Bromelain Enzyme, Recirculation, Growth, Survival
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