NDLI: Bovine mastitis and antibiotic resistance patterns in Selalle smallholder dairy farms, central Ethiopia

Content Provider	Springer Nature Link
Copyright Year	2007
Abstract	A study was conducted to determine the prevalence of mastitis, identify the major bacterial pathogens and test the antimicrobial resistance of milk bacterial isolates in smallholder dairy farms in Selalle area, Ethiopia. A total of 109 smallholder dairy farms comprising 500 crossbred lactating cows were included. The prevalence of clinical mastitis at herd, cow and quarter level was 8.3% (n = 9), 1.8% (n = 9) and 0.51% (n = 10), respectively, while that of sub-clinical mastitis was 54.7%, 22.3% and 10.1%, respectively. The univariate logistic regression showed that among the risk factors considered, presence of teat lesion, stage of lactation and parity number had significant effect on the prevalence of sub-clinical mastitis. However, after multivariate analysis, only presence of teat lesion and stage of lactation had significant effect. The common isolates from the clinical mastitic quarters were St. agalactiae (30%, n = 3) and St. dysgalactiae (30%, n = 3), while from sub-clinical cases were S. aureus (42.6%, n = 83), S. epidermidis (22.1%, n = 43), St. agalactiae (12.8%, n = 25) and St. uberis (10.3%, n = 20). Staphylococcus intermedius and Streptococcus dysgalactiae were the species, which showed high level of susceptibility for most of the antimicrobials tested, while the remaining had varying levels of resistance for almost all the antimicrobials used. Among the antimicrobials employed, erythromycin and sulphonamide showed the lowest proportion of resistant isolates. Considering the possible significant economic losses that could be incurred by both clinical and sub-clinical mastitis, attention should be paid for further detailed investigations including the economic losses and benefits of interventions in the study area.
Starting Page	261
Ending Page	268
Page Count	8
File Format	PDF
ISSN	00494747
Journal	Tropical Animal Health and Production
Volume Number	40
Issue Number	4
e-ISSN	15737438
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-10-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Antibiotic resistance Bovine Mastitis Prevalence Smallholder Zoology Veterinary Medicine
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Food Animals

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