Identification of Vibrio sp. as cause of white feces diseases in white shrimp Penaeus vannamei and handling with herbal ingredients in East Lampung Regency, Indonesia

White feces disease (WFD) is one of the diseases that attack white shrimp (Penaeus vannamei). This disease causes cultivation failure and huge loss for shrimp farmers. The cause of this disease is thought to be due to the abundance of the Vibrio bacteria population in cultivation media. This study was aimed to determine the abundance of Vibrio sp. and the presence of Vibrio sp. as a trigger for WFD in P. vannamei ponds and to study the use of several herbal ingredients in suppressing the growth of Vibrio sp. Samples were taken from secondary canals, tertiary canals, primary canals, shrimp pond waters that were not infected with WFD, shrimp pond water infected with WFD, and shrimp infected by WFD. Samples taken from those locations were then inoculated; the total population of the bacteria was calculated, identified and tested for anti-bacterial activity using several herbal products. According to the results of the study, Vibrio abundance was obtained as follows: water sample was positive of WFD by 3.5±0.9xl05 CFU mL-1, shrimp intestine was positive of WFD by 4.4±0.1x105 CFU mL-1, primary canal of 3.9±2.x104 CFU mL-1, secondary canal of 1.0±0.1x105 CFU mL-1, tertiary canal 3.2±1.1x105 CFU mL-1, shrimp pond 1 of 2.2±0.3x105 CFU mL-1, shrimp pond 2 of 1.3±0.3x105 CFU mL-1, shrimp pond 3 of 5.2±1.0x104 CFU mL-1, and healthy shrimp intestine of