The effects of Bacillus subtilis and Lactobacillus plantarum bacteria on survival, growth and digestive tract microflora of Achanthopagrus latus larvae with different delivery methods

This study examined the effects of two bacteria (Bacillu subtilis BP6 and Lactobacillus plantarum LP3) on survival، growth and digestive tract microflora of Achanthopagrus latus larvae with different delivery methods. For each bacterium was considered three treatments with different delivery methods. In first treatment، fish larvae were exposed to each bacterium through feeding them with bacteria-enriched Artemia. In second and third treatment، fish larvae were exposed to each bacterium through adding it directly to the water at 103 and 106 cells/ml respectively. The results show that in fish larvae to which bacteria had been administered، exhibited significant (P<0. 05) increases in both survival and growth parameters wet weight as compared to control. Both bacteria could colonize the water and the gastrointestinal tract with relatively consistent trend.