Prevalence, bacterial causes, and antimicrobial susceptibility profile of mastitis isolates from cows in large-scale dairy farms of Northern Ethiopia

• Published in: Tropical animal health and production 2012-10, Vol.44 (7), p.1765-1771
• Main Authors: Haftu, Rgbe, Taddele, Habtamu, Gugsa, Getachew, Kalayou, Shewit
• Format: Article
• Language: English
• Subjects: Age; Ampicillin; Animals; Anti-Bacterial Agents - pharmacology; Antibiotic resistance; Antimicrobial agents; Asymptomatic Infections - epidemiology; Bacteria - drug effects; Bacteria - isolation & purification; Biomedical and Life Sciences; Cattle; Chloramphenicol; Clindamycin; Coliforms; Cross-Sectional Studies; Dairies; Dairy farms; Disk Diffusion Antimicrobial Tests - veterinary; E coli; Environmental risk; Escherichia coli; Ethiopia - epidemiology; Farms; Female; Klebsiella pneumoniae; Lactation; Life Sciences; Mastitis; Mastitis, Bovine - epidemiology; Mastitis, Bovine - microbiology; Milk - microbiology; Nalidixic acid; Original Research; Parity; Prevalence; Regression analysis; Risk Factors; Staphylococcus aureus; Statistical analysis; Teats; Veterinary Medicine/Veterinary Science; Zoology
• ISSN: 0049-4747; 1573-7438
• DOI: 10.1007/s11250-012-0135-z

The study was undertaken to determine the prevalence of bovine mastitis, isolate mastitis causing bacteria, assess the association of some risk factors, and determine the antibiotic resistance pattern of bacterial isolates in cows in large-scale dairy farms of Northern Ethiopia. A total of 305 lactating and nonlactating cows were included in the present study. The overall prevalence of clinical and subclinical mastitis was 3.6 and 33.8 %, respectively. The quarter level prevalence was 15.4 %; from which, 11.9 and 1.1 % were subclinical form and blind teat, respectively, while the remaining 2.4 % were of clinical form. Staphylococcus aureus accounted for 36 % of the isolates followed by Escherichia coli (27.3 %). Risk factors including age ( p