Bovine Mastitis and Antibiotic Resistance Patterns of Major Pathogens in Small Holder Daiy Farms in the Central Highlands of Ethiopia
| dc.contributor.advisor | Belihu., Dr. KeJay | |
| dc.contributor.author | Kassaye, Getahun | |
| dc.date.accessioned | 2021-10-11T07:30:08Z | |
| dc.date.accessioned | 2023-11-08T11:34:23Z | |
| dc.date.available | 2021-10-11T07:30:08Z | |
| dc.date.available | 2023-11-08T11:34:23Z | |
| dc.date.issued | 2006-06 | |
| dc.description.abstract | The study w as co nducted wi th the objectives of detemlining the prevalence o f clinical and subclinical mastitis, identifying th e major pathogens of bo vi ne mastitis and testing antimicrobial resistance of th e major pathogens isolated from quarter mi lk samples in smallholder dairy farms in the central highlands of Eth iopi a. For this study, 109 smallholder fanners and 500 dairy cows were selec ted by a one-sta ge cl uster sampling. Questionnaire survey w as administered to th e f ann owners to c alleet data on cow and faml attributes. Clinical examination, CMT and bacteriological culturing were perfonned to diagnose the occurrence of clinica l and subc lin ical mastiti s. Data collected was analyzed using descript ive statistics and univariate and multivariate logistic regression. The results revealed that the prevalence of clinical mastitis at herd, cow and quaner level after culturing was 11 %, 2.6% and 0.5 1 %. The prevalence of subclinical mastitis at herd, cow and quarter le ve l was 54.7%, 22.3% and 10.06%, respectively. The most important pathogens isolated from subcli nical mas titis cases were S. aw'eus (46.6%), s. epidermidis (22.8%), Sr. aga/aeriae (11.1 %) and Sr . liberis ( 10.1 %), whereas those of clinical mastitis were Sr. aga/aeriae (30%), Sr. dysgalacriae (30%) and S. aureus (20%). The univariate logistic regression showed that , among the risk facto rs considered, presence of teat lesion (p<O.OI), stage or lactation (p<O.0 5) and parity number (p <O.0 5) had sign ifi cant errect on the prevalence of subclinical ma stitis, whereas on ly presence of teat lesion (p<O.OI) and stage lactation (p <0.05) had significant effect with multivariate logistic regression . None of the farm attributes considered as pOll:I1tiai risk factors (bam flo o r status. milking hygiene and milking masti tic cows at last) had signi fi cant effect (p>O .05). In addition , the. prevalence of subclinical mastitis at herd level was not sign ifi cantly affected by all the factors considered {farm attributes}. Regarding the antimicrobial susceptibility test. Sr. inrermidills and S1. dysgalactiae we re the species. which s ho wed high level of susceptibility for most of the antimicrobials, while the rest had different levels of resistance for almost all the antimicrobials. From the antimicrobial s applied sulphonamides was the most effective drugs, whi le ampicilin was the least effective drug. From this study it can be co ncluded that the prevalence of subclinical and clinical mastitis VIII were low and moderate, respectively, in the study area. S. allrellS, was found to be the major isolate and many of the pathogens showed resistance to commonly used drugs. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/28090 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University Faculty Of Veterinary Medicine | en_US |
| dc.subject | smallholder, dairy, clinical , subclinical , mastitis, prevalence, isolates, ant imicrobials | en_US |
| dc.title | Bovine Mastitis and Antibiotic Resistance Patterns of Major Pathogens in Small Holder Daiy Farms in the Central Highlands of Ethiopia | en_US |
| dc.type | Thesis | en_US |