Phân lập và tuyển chọn vi khuẩn chuyển hóa đạm từ bùn đáy ao nuôi tôm thẻ chân trắng (Litopenaeus vannamei)

Abstract

The study was conducted to isolate and to select nitrifying bacteria from sediment samples of whiteleg shrimp culture ponds. In this study, 121 nitrifying bacterial strains have been successfully isolated. As a result, the most common isolates were short rods, Gram-negative and motile. Among the obtained strains, TB7.2 showed the highest ammonia oxidation efficiency (39,02%) while strain TV4.2 performed the highest nitrite oxidation efficiency (27,8%) after 5 days of incubation. Strain TB7.2 and TV4.2 are Gram-negative, rod bacteria and have high potential for water treatment in aquaculture.