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The bioproducts to inhibit pathogenic bacteria have become an alternative to replace antibiotics. In this study, we isolated 17 potential lactic bacteria strains from 23 shrimp samples in Thua Thien Hue province with Vibrio parahaemolyticus inhibition activity. The molecular identification based on 16S rRNA nucleotide sequence comparison indicated that 4 strains are highly identity with Lactococcus garvieae. The isolate with the highest antagonistic activity was selected to evaluate the growth inhibition against Vibrio spp., Escherichia coli ATCC 85922 and Staphylococcus aureus ATCC 25023. The inhibition zone demonstrated that the isolate was capable to inhibit various Vibrio spp. with the highest inhibition diameter of 23 mm. Meanwhile, the isolate showed a 15 mm and 11 mm inhibition diameter against S. aureus ATCC 25023 and E. coli ATCC 85922, respectively. This is the first study in Vietnam conducting the isolation and evaluation of L. garvieae against pathogenic bacteria causing disease on shrimps and other aqua animals.

PHÂN LẬP VÀ KIỂM TRA KHẢ NĂNG KHÁNG VI KHUẨN GÂY BỆNH CỦA Lactococcus garvieae TỪ HỆ TIÊU HÓA TÔM