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dc.contributor.authorBerry, Donagh P.
dc.contributor.authorMeaney, William J
dc.date.accessioned2013-12-09T12:49:59Z
dc.date.available2013-12-09T12:49:59Z
dc.date.issued2005
dc.identifier.citationD.P. Berry, W.J. Meaney. (2005) Cow factors affecting the risk of clinical mastitis. Irish Journal of Agricultural and Food Research 44: 147–156en_GB
dc.identifier.issn0791-6833
dc.identifier.urihttp://hdl.handle.net/11019/463
dc.identifier.urihttp://www.teagasc.ie/research/journalarchives/vol44no2/0904.pdf
dc.descriptionpeer-revieweden_GB
dc.description.abstractThe objective of the present study was to identify cow risk factors associated with development of clinical mastitis (CM) in subsequent stages of lactation. A total of 3,309 lactations from spring-calving Holstein-Friesian cows were included in the analysis; parity number ranged from one to three, inclusive. A generalised estimating equations approach with a logit link function was used to account for the binary nature of the data and the unequal number of repeated records per cow. The dependent variable was the probability of developing CM in the subsequent stage of lactation. Independent variables included in the model were chosen using stepwise selection; herd, year of birth, month of calving, parity, period of lactation and previous CM history significantly affected the probability of CM. Two-way interactions between parity and period of lactation and between parity and incidence of CM in the previous lactation were also included in the model. A greater probability of developing CM is expected in cows that experienced CM in the previous lactation and/or previously within the same lactation. The probability of CM occurring in cows that experienced at least one case of CM in the previous lactation was 0.92 to 3.75 times that of a cow that experienced no CM in the previous lactation. It is possible to predict the probability of an animal developing CM in the subsequent stage of lactation when information is available on the parity and month of calving of the animal and its previous history of CM.en_GB
dc.language.isoenen_GB
dc.publisherTeagasc (Agriculture and Food Development Authority), Irelanden_GB
dc.relation.ispartofseriesIrish Journal of Agricultural and Food Research;vol 44
dc.subjectClinical Mastitisen_GB
dc.subjectHistoryen_GB
dc.subjectOddsen_GB
dc.subjectProbabilityen_GB
dc.titleCow factors affecting the risk of clinical mastitisen_GB
dc.typeArticleen_GB
dc.identifier.rmisMKDC-0201-5499
refterms.dateFOA2018-01-12T07:51:02Z


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