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APHA’s Livestock Demographic Data Groups (LDDGs) publishes livestock population reports

On 13 November 2017, APHA’s Livestock Demographic Data Groups (LDDGs) have published their latest population reports which show livestock population density maps for Great Britain for:

Each report states how the maps were created, what data sources were used and what limitations there are in understanding the maps.

Livestock Demographic Data Groups (LDDGs)

The aim of the Livestock Demographic Data Groups (LDDGs) is to enhance understanding of livestock demographics and associated data in GB.

This includes development of demographic risk indicators which may be used to monitor changes in the risk of disease introduction or transmission to and between livestock. 

The LDDGs also aim to provide expertise on livestock demographic data for ad hoc consultancy requests.

The need to better understand our livestock populations, their movements and behaviours was identified as a lesson learned from previous Foot and Mouth Disease (FMD) outbreaks and was raised to the Veterinary Risk Group (VRG).

The work is funded by Defra, Scottish Government and Welsh Government under Contract G - Enhance surveillance, facilitate and improve outbreak response and inform policy development. 

The APHA Advice Services Epidemiology & Risk Policy Advice team maintain oversight of the groups and deliverables on behalf of the policy customers. Management of the project is provided by the Science Strategy and Planning team at Weybridge.

Each LDDG is made up of an epidemiologist, a data scientist and GIS support from the Department of Epidemiological Sciences (DES) with a relevant Species Expert Group Lead from the Surveillance Intelligence Unit (SIU); LDDGs are multi-disciplinary collaborative groups.


If you have any queries, please contact the relevant Species Expert Group Lead.

Published: 13 November 2017