KAJIAN POPULASI BAKTERI VIBRIO SP. PADA TAMBAK BUDIDAYA UDANG VANAME (LITHOPENAEUS VANNAMEI) SISTIM SEMI INTENSIF DENGAN PERSENTASE PEMBERIAN PAKAN YANG BERBEDA

The study of the population of Vibrio sp isolated from water and sediment in semi-intensive ponds with a different percentage of doses of feed carried on the pond size 2500 m2 as 8 plot consisting of 6 plots the treatment and 2 plots reservoir. Shrimp used size PL 12 with dense stocking 25 tail/m2 maintained for 100 days. The treatments tested were to compare the percentage of feed between day and night. Treatment A = 100% at day and 0% at night, treatment B = 60% at day and 40% during the night, treatment C = 80% at day and 20% during the night. Each treatment was repeated twice. The results showed that population of bacteria in the sediment pond were in the range of 106 to 1012 CFU /mL. While the population of bacteria in water was in the range of 103 to 109 CFU/mL. Populations of Vibrio sp. in the pond sediment for all treatments during the study were in the range of 103 to 105 CFU/ mL. While in aqueous media is still in the range of 101 to 103 CFU/mL for all treatments. In general, bacterial populations are found in both sediment and water pond on the media is still in a safe range for the growth of cultured organisms