Effects of addition local microorganisms (LM) in commercial feed to the growth of Osphronemus goramy

This study aimed to determine the effect of adding local microorganisms as probiotics in commercial feed to accelerate the growth of Osphronemus goramy. This research was conducted in December 2018 to February 2019 at the Marine Biology Laboratory, Faculty of Marine and Fisheries, Universitas Syiah Kuala, Banda Aceh. The method used in this study was an experimental method with Completely Randomized Design (CRD) consisting of 6 levels of treatment and 3 replications. The concentration treatment tested ware the addition of LM 0 ml 100g(-1) of feed (A), 2 mL 100g(-1) of feed (B), 4 mL 100g(-1) of feed (C), 6 mL 100g(-1) of feed (D), 8 mL 100g(-1) of feed (E) and 10 mL 100g(-1) of feed (F). The ANOVA test results showed that administration of LM in commercial feed at a dose of 4 mL 100g(-1) had an effect on absolute length growth, absolute weight growth, specific growth rate, feed conversion ratio and survival (p<0.05), but did not affect the value feed efficiency (p>0.05). The best treatment was obtained in treatment C (addition of 4 mL 100g(-1) LM of feed) namely absolute length growth (3.08 cm), absolute weight growth (0.31g), specific growth rate (2.42%), feed conversion ratio (3.22) and survival rate (74.35%). Water quality parameters in this study were within the normal tolerance range for the life of carp.