Authors : Kentaro Koide, Ryo Murata, Au XuanKhoa, Nguyen Khanh Ly, Phan Thi Tam, Vu Thi Thu Tra, Duong Van Nhiem, Satoko Kubota, Hiroichi Kono and Kohei Makita
Abstract: The emergence of antibiotic-resistant bacteria has caused significant economic losses in the dairy farm industry due to the decreased effectiveness of treatment in dairy cattle. We conducted antibiotic susceptibility testing against bovine mastitis-causing pathogens isolated from the milk of dairy cattle in the Ba Vi district of Vietnam, a farming region near Hanoi. The isolated bacterial strains examined in this study included 11 strains of Streptococcus agalactiae and 7 strains of Staphylococcus spp. The strains were tested for resistance to ampicillin, kanamycin, erythromycin, oxytetracycline and cefazolin using the disc diffusion method. All strains were found to be resistant to one or more antibiotics. Of the 18 strains examined, 13 were resistant to multiple antibiotics. In addition, mixed infections involving 2 strains with different antibiotic resistance profiles were confirmed. These results indicate that antibiotic-resistant bacteria are widespread in this region, rendering bovine mastitis more difficult to treat. To ameliorate potential economic losses, it is especially important to use antibiotics correctly.
Kentaro Koide, Ryo Murata, Au XuanKhoa, Nguyen Khanh Ly, Phan Thi Tam, Vu Thi Thu Tra, Duong Van Nhiem, Satoko Kubota, Hiroichi Kono and Kohei Makita, 2021. Antibiotic Resistance Profiles of Bovine Mastitis-Causing Pathogens Isolated in Ba Vi, Hanoi, Vietnam. Journal of Animal and Veterinary Advances, 20: 46-49.