A retrospective epidemiological analysis of risk factors for a primary necropsy diagnosis of bovine respiratory disease
| Autor: | Jamie A. Tratalos, Joseph P. Cassidy, N. Bourke, Gerard M. Murray, Miriam Casey, D. J. Sammin, Simon J. More, Máire C. McElroy, Bernadette Earley, Tracy A. Clegg, Rónan G. O’Neill, Jennifer B. McClure |
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| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty Veterinary medicine 040301 veterinary sciences Bovine Respiratory Disease Complex Bovine respiratory disease Logistic regression 0403 veterinary science Food Animals Environmental risk Risk Factors Internal medicine Epidemiology medicine Animals Retrospective Studies Preventive healthcare business.industry Respiratory disease 0402 animal and dairy science 04 agricultural and veterinary sciences Animal husbandry medicine.disease 040201 dairy & animal science Case-Control Studies Herd Cattle Female Animal Science and Zoology Autopsy business Ireland |
| Zdroj: | Preventive Veterinary Medicine. 132:49-56 |
| ISSN: | 0167-5877 |
| Popis: | Bovine respiratory disease (BRD) is a multifactorial disease and the primary cause of both bovine morbidity and mortality in Ireland. The risk factors associated with a primary necropsy diagnosis of BRD among cattle in the traditional (non-feedlot) husbandry systems prevalent in Ireland have not been investigated previously. The aim of this case-control study was to investigate those risk factors among cattle of all ages over an 8 year period. A total of 3,090 BRD cases and 5,236 controls were matched by submitting veterinary practitioner. Univariable and multivariable analyses were performed to examine the association of selected animallevel, herd-level and environmental risk factors with case or control status using a conditional logistical regression model. Male cattle aged more than 31 days were significantly more likely to record a primary necropsy diagnosis of BRD than female cattle. Older cattle of both sexes were at increased odds of a BRD necropsy diagnosis than younger calves with the exception of female cattle aged greater than 165 days. The risk of a primary necropsy diagnosis of BRD increased with increasing herd size and decreased with increasing time in days since the last animal movement into the submitting herd. There were significantly reduced odds of a primary necropsy diagnosis of BRD in the summer (June to August) when compared with the autumn (September to November). These findings identify significant risk factors for a necropsy diagnosis of BRD under non-feedlot-type husbandry conditions. |
| Databáze: | OpenAIRE |
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