Effect of probiotic em-4 in feeds on the growth and survival rate of goldfish (Carrasius auratus)

Abstract

EM-4 is one kind of probiotic which contains Effective Microorganisms Generation Four that could promote the growth of fish, water quality improvement and inhibit the patogen bacteria in waters. The objective of the research were to analyze the effect of probiotic EM-4 in feed on the growth and survival rate of Goldfish, and to determine the best dose of probiotic to gain the highest growth and survival rate of Goldfish (Carrasius auratus). The research had been conducted by using completely randomized experiment method which four treatments and three replications. The initial weight of fish was 3 to 4 grams and length 3.5 to 3.6 cm. Based on the research it was found that the probiotic doses in feeds had significant effect on the growth and survival rate of Goldfish.The best dose of probiotic was 30 ml/kg feed with weight growth was 5.6 gram, length growth was 1.2 cm, and survival rate was 100%.