Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/59571
Title: Are infectious reproductive pathogens of large ruminants a threat to improving food security? An investigation from Cambodia
Contributor(s): Olmo, Luisa  (author)orcid ; Reichel, Michael Philipp (author); Windsor, Peter Andrew (author); Suon, Sothoeun (author); Wahl, Lloyd Christian (author); Thomson, Peter Campbell (author); Bush, Russell David (author)
Publication Date: 2021-09-24
DOI: 10.1007/s11250-021-02897-8
Handle Link: https://hdl.handle.net/1959.11/59571
Abstract: 

In Cambodia, information on common pathogens causing reproductive losses in cattle and bufalo are lacking, despite there being a need to address livestock health to enhance food security. We analysed stored bufalo (n=29) and cattle (n=471) serum samples collected in 2016 using commercially available enzyme-linked immunosorbent assay kits. Antibodies to Neospora caninum, bovine viral diarrhoea virus (BVDV), Leptospira interrogans serovar Hardjo and Brucella abortus were detected in bufalo samples at 79.3% (95% CI 64.6–94.0), 3.4% (95% CI 0–10.0), 0% and 0%, respectively, and in cattle at 4.2% (95% CI 2.4–6.0), 6.4% (95% CI 4.2–8.6), 8.1% (95% CI 5.6–10.6) and 0%, respectively. The high N. caninum seroprevalence in bufalo was associated with increasing age, with bufalo having a 13.1% chance of being seropositive at birth, increasing to 99.4% by age 7 (p=0.045). This suggests a predominance of horizontal transmission, possibly from exposure to faeces from free-roaming village dogs. Cattle L. interrogans serovar Hardjo seroprevalence was highest in Tbong Khmum province (20.4%) compared to other provinces (p<0.001), and may be compromising bovine fertility and creating a zoonotic risk for smallholders who may contract leptospirosis from farm work. These high infection rates prompt further research to determine: to what extent these pathogens are linked to the low reproductive efciency observed in large ruminants in Cambodia, the risk factors to pathogen exposure and appropriate strategies to reduce these risks. Low BVDV and B. abortus exposure is an important observation. Increasing large ruminant livestock trade into the country will require improved biosecurity and disease surveillance to prevent their emergence. An enhanced understanding of the status of infectious reproductive livestock pathogens in Cambodia can assist development projects to make evidence-based strategies to enhance cattle and bufalo health and improve food security.

Publication Type: Journal Article
Source of Publication: Tropical Animal Health and Production, 53(5), p. 1-12
Publisher: Springer Dordrecht
Place of Publication: The Netherlands
ISSN: 1573-7438
0049-4747
Fields of Research (FoR) 2020: 3003 Animal production
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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