Isolation and antimicrobial susceptibility of bacteria in uterine infections in mares

N. Silva C.E. Braga G.M. Costa F.C.F. Lobato About the authors

This study examined 206 cervical and uterine swabs collected from infected mares from herds in the Minas Gerais State, Brazil, from 1986 to 1996. Amongst 164 successful isolations, 25.7% were identified as Streptococcus equi, subsp. zooepidemicus, and 15.1% as Escherichia coli, both considered the most important isolates. Other bacteria found included Staphylococcus aureus (9.2%), Streptococcus alpha-hemolytic (9.2%), Pseudomonas aeruginosa (3.9%), coagulase negative Staphylococcus (6.3%), Bacillus spp. (1.9%), Rhodococcus equi (3.4%) and Proteus mirabilis (1.5%). The antibiotic susceptibility tests revealed amikacin and gentamicin (70.2%), ampicillin and chloramphenicol (59.5%) as the most effective in vitro antibiotics against these microorganisms.

Mare; endometritis; antibiotic

Universidade Federal de Minas Gerais, Escola de Veterinária Caixa Postal 567, 30123-970 Belo Horizonte MG - Brazil, Tel.: (55 31) 3409-2041, Tel.: (55 31) 3409-2042 - Belo Horizonte - MG - Brazil