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BMC Vet Res. 2012; 8: 43.
Published online Apr 4, 2012. doi:  10.1186/1746-6148-8-43
PMCID: PMC3351363
Summary of current knowledge of the size and spatial distribution of the horse population within Great Britain
Lisa A Boden,corresponding author#1 Tim DH Parkin,#2 Julia Yates,#2 Dominic Mellor,#2 and Rowland R Kao#1
1Boyd Orr Centre for Population and Ecosystem Health, Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, 464 Bearsden Road, Glasgow G61 1QH, UK
2Boyd Orr Centre for Population and Ecosystem Health, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, 464 Bearsden Road, Glasgow G61 1QH, UK
corresponding authorCorresponding author.
#Contributed equally.
Lisa A Boden: Lisa.Boden/at/glasgow.ac.uk; Tim DH Parkin: Tim.Parkin/at/glasgow.ac.uk; Julia Yates: yates_jules/at/hotmail.com; Dominic Mellor: Dominic.Mellor/at/glasgow.ac.uk; Rowland R Kao: Rowland.Kao/at/glasgow.ac.uk
Received December 13, 2011; Accepted April 4, 2012.
Abstract
Background
Robust demographic information is important to understanding the risk of introduction and spread of exotic diseases as well as the development of effective disease control strategies, but is often based on datasets collected for other purposes. Thus, it is important to validate, or at least cross-reference these datasets to other sources to assess whether they are being used appropriately. The aim of this study was to use horse location data collected from different contributing industry sectors ("Stakeholder horse data") to calibrate the spatial distribution of horses as indicated by owner locations registered in the National Equine Database (the NED).
Results
A conservative estimate for the accurately geo-located NED horse population within GB is approximately 840,000 horses. This is likely to be an underestimate because of the exclusion of horses due to age or location criteria. In both datasets, horse density was higher in England and Wales than in Scotland. The high density of horses located in urban areas as indicated in the NED is consistent with previous reports indicating that owner location cannot always be viewed as a direct substitute for horse location. Otherwise, at a regional resolution, there are few differences between the datasets. There are inevitable biases in the stakeholder data, and leisure horses that are unaffiliated to major stakeholders are not included in these data. Despite this, the similarity in distributions of these datasets is re-assuring, suggesting that there are few regional biases in the NED.
Conclusions
Our analyses suggest that stakeholder data could be used to monitor possible changes in horse demographics. Given such changes in horse demographics and the advantages of stakeholder data (which include annual updates and accurate horse location), it may be appropriate to use these data for future disease modelling in conjunction with, if not in place of the NED.
Keywords: Equine, Demography, Spatial distribution, Infectious disease, The National Equine Database
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