A comprehensive study in efficacy of Vietnamese herbal extracts on whiteleg shrimp (<i>Penaeus vannamei</i>) against <i>Vibrio parahaemolyticus</i> causing acute hepatopancreatic necrosis disease (AHPND)

Traditional Vietnamese herbal species were examined for their antimicrobial activity and disease resistance in whiteleg shrimp. In-vitro screening, the extracts of ten herbs conducted to test inhibition ability against Vibrio parahaemolyticus , causing acute hepatopancreatic necrosis disease. The results showed that five out species, including Pithecellobium dulce Melaleuca leucadendron Eucalyptus globulus Mimosa pirga Hibiscus sabdariffa displayed potent antibacterial activity. Besides, three types H. E. M. coated pellet feed at a concentration 1%. After 30 days feeding, shrimp ( Penaeus vannamei ) challenged by V. through immersion. growth performance (such as rate length weight, survival rate), hematological parameters total hemocytes (THC), hyaline (HC), granulocytes (GC), hepatopancreas recovery under treatments with significantly enhanced compared control (without extract). mortality bacterial density decreased. Specifically, treatment supplemented methanol extract was lowest, followed . experimental also indicated could improve immune resistance; therefore, they should be employed sustainable shrimp, practical farming.