Kohei  Makita, Hiroichi  Kono, Satoko  Kubota, Duong  Van Nhiem, Vu Thi  Thu Tra, Phan  Thi Tam, Nguyen  Khanh Ly, Au  XuanKhoa, Ryo  Murata, Kentaro  Koide, 
    Antibiotic Resistance Profiles of Bovine Mastitis-Causing Pathogens Isolated in Ba Vi, Hanoi,
Vietnam,
    Journal of Animal and Veterinary Advances,
    Volume 20,Issue 2,
    2021,
    Pages 46-49,
    ISSN 1680-5593,
    javaa.2021.46.49,
    (https://makhillpublications.co/view-article.php?doi=javaa.2021.46.49)
    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
<i>Streptococcus agalactiae</i> and 7 strains of <i>Staphylococcus</i>
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.
    Keywords: Bovine mastitis;antibiotic resistance;Staphylococcus aureus;Streptococcus agalactiae;Vietnam