Nghiên cứu tính an toàn và khả năng bảo vệ ấu trùng tôm sú của một số chủng Bacillus phân lập từ trùn quế trong điều kiện phòng thí nghiệm

• Main Authors: Dương Nhật Linh, Nguyễn Văn Minh, Đỗ Bảo Ngọc, Đan Duy Pháp
• Format: Article
• Language: English
• Published: HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE 2012-07-01
• Series: Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ
• Subjects: tôm sú; trùn quế; vibrio; nuôi trồng thuỷ sản.
• Online Access: https://journalofscience.ou.edu.vn/index.php/tech-vi/article/view/1050

Aims: This present study is aimed to evaluate the safety and the antagonistic effect of Bacillus against the pathogenic Vibrios on Black Tiger Shrimp larvae.Methods and Results: The safety of Bacillus was tested by exposing black tiger shrimp to Bacillus at a density of 106 CFU/ml. The results showed that there are 10 strains (T9, F10, F2, F13, F22, F28, F11, F27, F33, F34) are safe for black tiger shrimp larvae. These strains were further tested for their protection capability. Black tiger shrimp larvae was treated with Bacillus at a density 106 CFU/ml in 6 hours, then infected with Vibrio (V. harveyi, V. parahaemolyticus, V. alginolyticus). By this experiment, six strains (T9, F10, F2, F13, F22, F11) showed their protection capability to black tiger shrimp larvae, a higher survival rate of larvae have been recorded than control sample.Conclusions: This study reported that six (06) strains of Bacillus (T9, F10, F2, F13, F22, F11) were both safe and can controll pathogenic Vibrios under in vitro conditions. These results suggested that these Bacillus spp. can be applied as effective probiotic to control pathogenic Vibrio spp. in shrimp aquaculture.