Infection-interactions in Ethiopian village chickens

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cg.contributor.crpLivestock and Fish
cg.contributor.donorBiotechnology and Biological Sciences Research Council, United Kingdomen
cg.contributor.donorDepartment for International Development, United Kingdomen
cg.contributor.donorScottish Governmenten
cg.coverage.countryEthiopia
cg.coverage.iso3166-alpha2ET
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierTadelle Dessie: 0000-0002-1630-0417en
cg.creator.identifierJudy Bettridge: 0000-0002-3917-4660en
cg.creator.identifierOlivier Hanotte: 0000-0002-2877-4767en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1016/j.prevetmed.2014.07.002en
cg.isijournalISI Journalen
cg.issn0167-5877en
cg.issue2en
cg.journalPreventive Veterinary Medicineen
cg.reviewStatusPeer Reviewen
cg.subject.ilriANIMAL DISEASESen
cg.subject.ilriINDIGENOUS BREEDSen
cg.subject.ilriLIVESTOCKen
cg.subject.ilriPOULTRYen
cg.subject.ilriCHICKENSen
cg.volume117en
dc.contributor.authorBettridge, Judy M.en
dc.contributor.authorLynch, Stacey E.en
dc.contributor.authorBrena, M.C.en
dc.contributor.authorMelese, K.en
dc.contributor.authorDessie, Tadelleen
dc.contributor.authorTerfa, Z.G.en
dc.contributor.authorDesta, T.T.en
dc.contributor.authorRushton, S.en
dc.contributor.authorHanotte, Olivier H.en
dc.contributor.authorKaiser, P.en
dc.contributor.authorWigley, Paulen
dc.contributor.authorChristley, Robert M.en
dc.date.accessioned2014-09-29T14:54:22Zen
dc.date.available2014-09-29T14:54:22Zen
dc.identifier.urihttps://hdl.handle.net/10568/43784
dc.titleInfection-interactions in Ethiopian village chickensen
dcterms.abstractChickens raised under village production systems are exposed to a wide variety of pathogens, and current or previous infections may affect their susceptibility to further infections with another parasite, and/or can alter the manifestation of each infection. It is possible that co-infections may be as important as environmental risk factors. However, in cross-sectional studies, where the timing of infection is unknown, apparent associations between infections may be observed due to parasites sharing common risk factors. This study measured antibody titres to 3 viral (Newcastle disease, Marek's disease and infectious bursal disease) and 2 bacterial (Pasteurella multocida and Salmonella) diseases, and the infection prevalence of 3 families of endo- and ecto-parasites (Ascaridida, Eimeria and lice) in 1056 village chickens from two geographically distinct populations in Ethiopia. Samples were collected during 4 cross-sectional surveys, each approximately 6 months apart. Constrained ordination, a technique for analysis of ecological community data, was used to explore this complex dataset and enabled potential relationships to be uncovered and tested despite the different measurements used for the different parasites. It was found that only a small proportion of variation in the data could be explained by the risk factors measured. Very few birds (9/1280) were found to be seropositive to Newcastle disease. Positive relationships were identified between Pasteurella and Salmonella titres; and between Marek's disease and parasitic infections, and these two groups of diseases were correlated with females and males, respectively. This may suggest differences in the way that the immune systems of male and female chickens interact with these parasites. In conclusion, we find that a number of infectious pathogens and their interactions are likely to impact village chicken health and production. Control of these infections is likely to be of importance in future development planning.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.bibliographicCitationBettridge, J.M., Lynch, S.E., Brena, M.C., Melese, K., Dessie, T., Terfa, Z.G., Desta, T., Rushton, S., Hanotte, O., Kaiser, P., Wigley, P. and Christley, R.M. 2014. Infection-interactions in Ethiopian village chickens. Preventive Veterinary Medicine 117(2): 358-366.en
dcterms.extentp. 358-366en
dcterms.issued2014-11en
dcterms.languageen
dcterms.licenseCC-BY-3.0
dcterms.publisherElsevieren
dcterms.subjectpoultryen
dcterms.subjectanimal diseasesen
dcterms.subjectanimal healthen
dcterms.typeJournal Article

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