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Socially engaged calves are more likely to be colonised by VTEC O157:H7 than individuals showing signs of poor welfare

Tamminen, Lena-Mari and Hranac, C. Reed and Dicksved, Johan and Eriksson, Erik and Emanuelson, Ulf and Keeling, Linda (2020). Socially engaged calves are more likely to be colonised by VTEC O157:H7 than individuals showing signs of poor welfare. Scientific Reports. 10 , 6320
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Abstract

In cattle herds, the transmission and persistence of VTEC O157:H7 (a serotype of verotoxin-producing Escherichia coli - known for its life threatening complications in humans) is dependent on a small proportion of cattle who become colonised and shed high numbers of the bacteria. Reducing the proportion of these animals is considered key for decreasing the prevalence of VTEC O157:H7. In this study, observations of calf behaviour and animal-based welfare indicators were used to explore individual risk factors and underlying drivers of colonisation in Swedish dairy calves. Interdependencies between variables led to three different approaches being used to visualize and explore the associations. Combining the results of all methods revealed similar patterns and suggest that healthy animals, actively grooming and interacting with others calves in the group have a higher risk of colonisation than small dairy calves in poor condition (diarrhoea, poor ruminal fill, poor body condition score and nasal discharge). This lends no support to the hypothesis that reduced welfare is a risk factor for VTEC O157:H7, but implies that individual differences in calf behaviour affect oral exposure to the bacteria so driving the risk of colonisation. This new finding has important implications for understanding of VTEC O157:H7 transmission within farms.

Authors/Creators:Tamminen, Lena-Mari and Hranac, C. Reed and Dicksved, Johan and Eriksson, Erik and Emanuelson, Ulf and Keeling, Linda
Title:Socially engaged calves are more likely to be colonised by VTEC O157:H7 than individuals showing signs of poor welfare
Year of publishing :2020
Volume:10
Article number:6320
Number of Pages:12
ISSN:2045-2322
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
URN:NBN:urn:nbn:se:slu:epsilon-p-107922
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107922
Additional ID:
Type of IDID
DOI10.1038/s41598-020-63186-2
Web of Science (WoS)000562162600027
ID Code:17830
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Clinical Sciences
(VH) > Dept. of Animal Nutrition and Management
(VH) > Dept. of Animal Environment and Health
Deposited By: SLUpub Connector
Deposited On:15 Oct 2020 09:40
Metadata Last Modified:15 Oct 2020 09:41

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