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Impact of meteorological and environmental factors on the spatial distribution of Fasciola hepatica in beef cattle herds in Sweden

Novobilsky, Adam and Novák, Jakub and Björkman, Camilla and Höglund, Johan (2015). Impact of meteorological and environmental factors on the spatial distribution of Fasciola hepatica in beef cattle herds in Sweden. BMC Veterinary Research. 11:128, 1-9
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Official URL: http://dx.doi.org/10.1186/s12917-015-0447-0

Abstract

Background: Fasciola hepatica is a parasite with a significant impact on ruminant livestock production. Previous studies in north-west Europe have described its geographical distribution and determined potential predictors of fasciolosis using geographical information system (GIS) and regression modelling. In Sweden, however, information about the distribution of fasciolosis is limited. This study examined the geographical distribution of Fasciola hepatica and identified high-risk areas for beef cattle in Sweden and sought to characterise potential predictors. Beef cattle serum samples were collected during winter 2006-2007 from 2135 herds which were examined for Fasciola hepatica antibodies by enzyme-linked immunosorbent assay (ELISA). Fasciolosis distribution maps were created using GIS based on postcode location of seropositive herds. Spatial scan analysis (SaTScan) was performed to determine high-risk areas. Using datasets on animal density, temperature, precipitation and Corine land cover data, including soil type and soil mineral concentrations in Sweden, bivariate and multiple logistic regression analyses were carried out in R software to reveal potential predictors of Fasciola hepatica infection.Results: Overall herd seroprevalence of Fasciola hepatica in beef cattle was 9.8 % (95 % CI: 8.6-11.1). An irregular spatial distribution of Fasciola hepatica, with two main clusters, was observed in south-west Sweden. The most northerly occurrence of Fasciola hepatica in the world was documented. The final model explained 15.8 % of the variation in Fasciola hepatica distribution in study herds. Absence of coniferous forest was the variable with the highest predictive value. Precipitation in July-September, Dystric Cambisol, Dystric Regosol, and P and Cu concentrations in soil were other negative predictors. Beef cattle herd density, Dystric Leptosol and Fe concentration were positive predictors.Conclusions: The spatial distribution of Fasciola hepatica in Swedish beef cattle herds is influenced by multi-factorial effects. Interestingly, absence of coniferous forest, herd density, specific soil type and concentration of some soil minerals are more important predictors than climate factors.

Authors/Creators:Novobilsky, Adam and Novák, Jakub and Björkman, Camilla and Höglund, Johan
Title:Impact of meteorological and environmental factors on the spatial distribution of Fasciola hepatica in beef cattle herds in Sweden
Series/Journal:BMC Veterinary Research (1746-6148)
Year of publishing :2015
Depositing date:11 November 2015
Volume:11
Number:128
Page range:1-9
Number of Pages:9
Publisher:BioMed Central
ISSN:1746-6148
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:L Animal production > L50 Animal physiology and biochemistry
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Pathobiology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Medical Bioscience
Agrovoc terms:antibodies, environmental factors, epidemiology, rain, Scandinavia, regression analysis, risk analysis
Keywords:Antibodies, ELISA, Environmental, Epidemiology, GIS, Galba truncatula, Rainfall, Scandinavia, Risk analysis, Regression
URN:NBN:urn:nbn:se:slu:epsilon-e-3061
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3061
Additional ID:
Type of IDID
Web of Science (WoS)000356039600001
DOI10.1186/s12917-015-0447-0
ID Code:12785
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Clinical Sciences
(VH) > Dept. of Biomedical Sciences and Veterinary Public Health
Deposited By: SLUpub Connector
Deposited On:11 Nov 2015 14:00
Metadata Last Modified:12 Feb 2016 20:55

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