Journal article

A longitudinal study of faecal shedding of Yersinia enterocolitica and Yersinia pseudotuberculosis by Merino lambs in south-eastern Australia

KJ Stanger, H McGregor, M Marenda, JM Morton, JWA Larsen

PREVENTIVE VETERINARY MEDICINE | ELSEVIER SCIENCE BV | Published : 2018

Abstract

A prospective longitudinal study was conducted to investigate potential risk factors for faecal shedding of Yersinia enterocolitica and Y. pseudotuberculosis by Merino lambs in four flocks in south-eastern Australia. The primary aims of the study were to determine the seasonal patterns of shedding of pathogenic Y. enterocolitica and Y. pseudotuberculosis, and to evaluate putative risk factors for faecal shedding of these organisms, including worm egg count, live-weight and growth rate. The risk of shedding varied markedly between Yersinia spp., farms, seasons and years. Shedding of Y. pseudotuberculosis occurred predominately in winter, whereas Y. enterocolitica was commonly isolated from fa..

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Grants

Awarded by Meat and Livestock Australia


Funding Acknowledgements

This study was supported by Meat and Livestock Australia (grant B.STU.0247) and the Scobie and Claire Mackinnon trust. The authors acknowledge the technical support provided by D Rees and R Bushell, the farmers who generously donated their time and facilities for this study, and the assistance during field visits by our colleagues at the Mackinnon Project.