Differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis

Abstract

The aim of this study was to determine the differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis. Thirty-two strains of Moraxella spp. isolated from cattle and sheep with infectious keratoconjunctivitis were tested via broth microdilution method to determine their susceptibility to ampicillin, cefoperazone, ceftiofur, cloxacillin, enrofloxacin, florfenicol, gentamicin, neomycin, oxytetracycline and penicillin. The results demonstrated that Moraxella spp. strains could be considered sensitive for most of the antimicrobials tested in this study, but differences between the antimicrobial susceptibility profiles of these three Moraxella species were found. M. bovis might differ from other species due to the higher MIC and MBC values it presented.

Isolation of <i>Moraxella</i> sp. from Cases of Keratoconjunctivitis in an Organized Sheep Farm of India

“…Antibiotic sensitivity testing results showed that the isolate was sensitive to all the antibiotics used which was in concordance with earlier reports [9]. There are only few reports on Moraxella sp.…”

“…Moraxella bovis was attributed as the cause of infectious keratoconjunctivitis (IBK) in cattle and later findings reported that another agent namely M. bovoculi was also the cause of IBK in cattle [8]. M. bovis was also reported from sheep but the frequency of its isolation is less [9]. Reports regarding the isolation of Moraxella sp.…”

Antimicrobial usage and resistance in beef production

“…In a study of 32 Moraxella spp. isolated from cattle and sheep, Maboni et al [119] found that 40% of isolates were penicillin-resistant and 20% were tetracycline-resistant, but most were susceptible to other antimicrobials. Dickey et al [120] published the genome sequence for an AMR isolate of Moraxella bovoculi , Mb58069.…”

Bir İnfeksiyöz Koyun Keratokonjonktivit Salgınından Moraxella ovis ve Mycoplasma conjunctivae İzolasyonu ve Güçlendirilmiş Tedavi Yaklaşımı

“…(notably M. conjunctivae), Moraxella spp., C. conjunctivae, L. monocytogenes, A. oculi are often blamed as causative agents of IKC in animals [2] . Moraxella bovis is reported to be the most common agent of infectious bovine keratoconjunctivitis in the world [8,20] . In contrast, the main microorganisms isolated from IKC of sheep lesions are M. conjunctivae, C. psittaci and M. ovis [5,28] .…”

“…The combination of cephalosporins (ceftriaxone, cephazol, ceftazidime-50 mg/mL) and aminoglycosides (tobramycin, gentamycin or amikacin) gives good results when used topically against polybacterial keratitis [19] . Penicillin and tetracycline susceptibility was reported to control M. ovis infection, especially to avoid exacerbation of lesions primarily caused by M. conjunctivae [20] . Additionally, animals with M. conjunctivae require antibiotic combination of oxytetracycline and polymyxin B, but not to penicillin [21] .…”