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Prevalence of bovine norovirus and nebovirus and risk factors of infection in Swedish dairy herds

Tråven, Madeleine and Axén, Charlotte and Svensson, Anna and Björkman, Camilla and Emanuelson, Ulf (2022). Prevalence of bovine norovirus and nebovirus and risk factors of infection in Swedish dairy herds. Dairy. 3 :1 , 137-147
[Research article]

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Abstract

Enteritis is the major cause of mortality in neonatal calves. Diagnostic work to detect the pathogens involved and identification of risk factors for such infections are imperative to improve calf health. Bovine norovirus (BNoV) and nebovirus prevalence was investigated using RT-PCR in 50 dairy herds in five geographic regions of Sweden. BNoV and nebovirus were found to be common infections in young dairy calves. BNoV was detected in 20% of 250 calves in 48% of the herds. Nebovirus was detected in 5% of the calves in 16% of the herds. Both infections were present in three herds (6%). BNoV-infected calves were younger (median age 7 days) than nebovirus-infected calves (median age 21 days). These infections were not detected in adult cows and young stock over 6 months of age tested in selected herds. Risk factors identified for BNoV infection were a high number of preweaned calves present at the time of sampling, colostrum uptake by suckling the dam only, calf kept in a single pen, and geographic location of herd, while no risk factors for nebovirus infection were identified in the multivariable analysis. Univariable analysis suggested risk factors for nebovirus infection to be geographic location and early separation from the dam.

Authors/Creators:Tråven, Madeleine and Axén, Charlotte and Svensson, Anna and Björkman, Camilla and Emanuelson, Ulf
Title:Prevalence of bovine norovirus and nebovirus and risk factors of infection in Swedish dairy herds
Series Name/Journal:Dairy
Year of publishing :2022
Volume:3
Number:1
Page range:137-147
Number of Pages:11
Language:English
Publication Type:Research 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
Keywords:bovine norovirus, nebovirus, RT-PCR, dairy calves, diarrhea, risk factors
URN:NBN:urn:nbn:se:slu:epsilon-p-118316
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118316
Additional ID:
Type of IDID
DOI10.3390/dairy3010011
ID Code:28458
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Clinical Sciences
Deposited By: SLUpub Connector
Deposited On:17 Aug 2022 06:25
Metadata Last Modified:17 Aug 2022 06:31

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