Influence of Commercial Probiotics on Digestive Enzyme Activities of Black Tiger Shrimp Penaeus monodon (Fabricius) Reared in Semi-Intensive Culture Ponds

The influence of commercial probiotics on digestive enzyme activities of the shrimp Penaeus monodon was investigated. The commercial water and feed probiotics (Wunapuo 15 and Aqualact) were used in shrimp culture ponds (~1 ha), water probiotic @ 30kg/ha every 15 days intervals up to 110 days of culture and feed probiotic @ 5 gm / kg feed every alternate day starting from 15th day of culture till harvest. The activities of the digestive enzymes amylase, protease and lipase on 30, 60 and 90 days of culture in P. monodon from control (CP control pond) and probiotic treated (WPB water probiotic treated, FPB feed probiotic treated, WFPB water + feed probiotic treated) culture ponds during the summer crop. The mean digestive enzyme activities of each treatment groups was significantly different (P less than 0.05) from that of the control. The maximum percent increase in all three digestive enzyme activities was observed in WFPB groups followed by FPB and WPB groups.