DOI: 10.36347/sajb.2020.v08i02.001

Pages: 13-22

This work was emphasized the growth performance of the prawn, Macrobrachium rosenbergii post larvae (PL) fed with a probiotic bacterium, Enterococcus gallinarum enriched Artemia franciscana nauplii at five different serially diluted concentrations (10-1, 10-3, 10-5, 10-7 and 10-9). A 45 day, feeding trial, showed significantly (P<0.05) increased survival rate, growth rate, contents of total protein, amino acid, carbohydrate and lipid, and activities of digestive enzymes (protease, amylase and lipase) in test prawns, particularly at 847x10-7, CFU. At this concentration, the consortium of the gut microflora of unenriched Artemia nauplii fed prawn showed the presence of E. coli; Klebsiella sp., Citrobacter sp., Acinetobacter sp., Streptococcus sp., Bacillus sp., Staphylococcus sp., and Pseudomonas sp. But in E. gallinarum enrich Artemia nauplii fed PL showed the presence of Enterococcus sp., Streptococcus sp., E. coli, Bacillus sp., and Klebsiella sp. Thus, it was found the pathogenic bacteria, Citrobacter sp., Acinetobacter sp., Staphylococcus sp., and Pseudomonas sp., were replaced due to the colony establishment of Enterococcus sp., in test prawns. Hence, E. gallinarum can be used as a probiotic for sustainable culture of M. rosenbergii.