Diana Rachmawati, Asep Awaludin Prihanto, Roy Hendroko Setyobudi, Olga Anne
The study aimed to find the impact of additional papain enzyme in feed digestibility, growth performance, and survival rate in post larvaes of freshwater lobster [Cherax quadricarinatus (Von Martens, 1868)]. There were five treatments with dosage A (0 % papain enzyme per kg feed), B (0.1 % papain enzyme per kg feed), C (0.2 % papain enzyme per kg feed), D (0.3 % papain enzyme per kg feed) and E (0.4 % papain enzyme per kg feed). Every treatment was repeated three times. The experiment used Completely Randomized Design. EFU (Efficiency of Feed Utilization), FCR (Feed Conversion Ratio), PER (Protein Efficiency Ratio), RGR (Relative Growth Rate), ADCP (Apparent Digestibility Coefficient of Protein), SR (Survival Rate) and water quality parameters were determined. The study found that the impacts of the various dosages of papain enzyme exhibited significant effects (P < 0.01) on the EFU, FCR, PER, RGR, ADCP; however, insignificant effects were observed (P > 0.05) on the survival rate of freshwater lobster. It was concluded that the incorporation of papain enzyme improved the feed digestibility and the growth performance of post larvae in freshwater lobster. The study found that optimum dosages of papain enzyme on feed digestibility, efficiency of feed utilization and growth rate of freshwater lobster ranged from 0.24 % to 0.31 % papain enzyme per kg feed. The quality of media culture was still in the feasible condition for post larvae of freshwater lobster cultivation. © Pakistan Academy of Sciences.
Department of Aquaculture, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. Soedarto, SH, Tembalang, Semarang, 50275, Central Java, Indonesia; Department of Fishery Product Technology, Faculty of Fisheries and Marine Science, Brawijaya University, Jl. Veteran, Malang, 65145, East Java, Indonesia; Waste Laboratory, University of Muhammadiyah Malang, Jl. Raya Tlogomas No. 246, Malang, 65114, East Java, Indonesia; Department of Natural Sciences, Faculty of Marine Technology and Natural Sciences of Klaipeda University, H. Manto g. 84, Klaipėda, 92294, Lithuania
