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Please use this identifier to cite or link to this item: http://hdl.handle.net/11019/277

Title: Demographics of cattle positive for Mycobacterium avium subspecies paratuberculosis by faecal culture, from submissions to the Cork Regional Veterinary Laboratory
Authors: Richardson, EKB
Mee, John F
Sánchez-Miguel, C
Crilly, J
More, Simon J
Keywords: Mycobacterium avium subspecies paratuberculosis
Demography of bovine infection
Issue Date: 1-Jun-2009
Publisher: Biomed Central
Citation: Demographics of cattle positive for Mycobacterium avium subspecies paratuberculosis by faecal culture, from submissions to the Cork Regional Veterinary Laboratory. Richardson, EKB et al. Irish Veterinary Journal, 2009, 62(6):398-405.doi:10.1186/2046-0481-62-6-398
Series/Report no.: Irish Veterinary Journal
Abstract: The demography of bovine infections caused by Mycobacterium avium subspecies paratuberculosis (MAP) in Ireland is poorly defined. The objective of this study was to describe the demographics of cattle positive to MAP on faecal culture, based on submissions to the Cork Regional Veterinary Laboratory (Cork RVL) from 1994 to 2006. The study focused on all available faecal samples from adult cattle with non-responsive chronic diarrhoea that were submitted by private veterinary practitioners to Cork RVL for MAP culture. For each MAP-positive by faecal culture animal, data were collated from Cork RVL and Cattle Movement Monitoring Scheme (CMMS) records. Johne's disease (JD) was confirmed in 110 animals from 86 herds by the Cork RVL between 1994 and 2006, with a rate of positive cases between 15% and 18% over last four years of the study. Two breeds (Holstein/Friesian or Limousin) made up 78% of submissions. Movements were assessed for the 57 study animals with available movement information, 90% died within one year of the test and 26% tested positive in the herd they were born into. The study provides preliminary information about movement trends and demographics of animals with MAP positive submissions. Although the study area is restricted, it includes the most intensive (and economically-important) dairy region in Ireland. The demographics of JD infection from the study area are in agreement with international reports. Further work is required to determine demographic trends, incidence and prevalence of JD throughout Ireland. It is hoped this work may contribute to the development of a surveillance strategy for MAP by regional veterinary laboratories.
Description: peer-reviewed
URI: http://hdl.handle.net/11019/277
http://dx.doi.org/10.1186/2046-0481-62-6-398
Appears in Collections:Animal & Bioscience
Teagasc publications in Biomed Central

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