Effects of probiotics (rabal) with different doses on the survival, feed conversion, and growth of giant prawns (Macrobrachium rosenbergii)

This study aims to determine the effect of the best RABAL probiotic dose on the media for the maintenance of giant shrimp larvae (Macrobrachium rosenbergii) on the survival, feed conversion, and growth. This research was conducted from March to April 2019 at Brackish Water Aquaculture (Balai Perikanan Budidaya Air Payau, BPBAP) Ujung Batee, Aceh Besar district, Province of Aceh. This study used a Completely Randomized Design (CRD) with 4 levels of treatments and 4 repetitions. The treatments used of RABAL with a dose (A) 0 ppm, (B) 75 ppm, (C) 150 ppm, and (D) 225 ppm. The frequency of administration of RABAL was once a day. The giant prawn larvae used was a larvae stage with an average weight of 0.05 g/larvae. Based on the result of ANOVA test the best value was obtained a treatment D (225 ppm) with absolute weight growth value of 0.16 g +/- 0.003, absolute growth length of 1.30 cm +/- 0.053, specific growth rate 5.08 +/- 0.043, survival rate 96.25 +/- 4.787 and feed conversion ratio 0.83 +/- 0.013, respectively. The result of this research showed that the administration of RABAL with different doses into maintenance media had a significant effect (P<0.05) on the growth and feed conversion ratio of giant shrimp larvae but did not significant influence (P>0.05) on the survival rate of giant shrimp larvae.