Longitudinal prevalence and faecal shedding of Chlamydia pecorum in sheep

R. Yang; C. Jacobson; G. Gardner; I. Carmichael; A.J.D. Campbell; U. Ryan

doi:10.1016/j.tvjl.2014.05.037

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Longitudinal prevalence and faecal shedding of Chlamydia pecorum in sheep

Journal article

Open access

Peer reviewed

Longitudinal prevalence and faecal shedding of Chlamydia pecorum in sheep

R. Yang, C. Jacobson, G. Gardner, I. Carmichael, A.J.D. Campbell and U. Ryan

The Veterinary Journal, Vol.201(1), pp.322-326

2014

DOI: https://doi.org/10.1016/j.tvjl.2014.05.037

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Abstract

The prevalence and faecal shedding of Chlamydia spp. in sheep in Australia has not been well described. Two species-specific quantitative PCRs (qPCRs) targeting the chlamydial outer membrane protein cell surface antigen gene (ompA) were validated and used to determine the prevalence and faecal shedding of C. abortus and C. pecorum from faecal samples of lambs at three sampling times (weaning, post-weaning and pre-slaughter) from eight farms in South Australia, New South Wales, Victoria and Western Australia. A total of 3412 faecal samples were collected and screened from approximately 1189 lambs across the four states. C. abortus was not detected in any of the samples screened. The overall prevalence of C. pecorum was 1027/3412 (30.1%) and median bacterial concentrations at weaning, post-weaning and pre-slaughter were 1.8 × 107, 1.2 × 107 and 9.6 × 105/g faeces, respectively. A subset of C. pecorum positive samples from each farm, (n = 48) was sequenced to confirm their identity. The present study demonstrates that C. pecorum is prevalent in Australian sheep, highlighting a need for further research on the impact of this bacterium on production.

Details

Title: Longitudinal prevalence and faecal shedding of Chlamydia pecorum in sheep
Authors/Creators: R. Yang (Author/Creator)
C. Jacobson (Author/Creator)
G. Gardner (Author/Creator)
I. Carmichael (Author/Creator)
A.J.D. Campbell (Author/Creator)
U. Ryan (Author/Creator)
Publication Details: The Veterinary Journal, Vol.201(1), pp.322-326
Publisher: Balliere Tindall
Identifiers: 991005543158907891
Copyright: © 2014 Elsevier Ltd.
Murdoch Affiliation: School of Veterinary and Life Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 1 Clinical & Life Sciences; 1.248 Sexually Transmitted Infections; 1.248.655 Chlamydia Infections
Web Of Science research areas: Veterinary Sciences
ESI research areas: Plant & Animal Science