About the Authors

Meriel Moore-Colyer

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Methodology, Writing – original draft

meriel.moore-colyer@rau.ac.uk

Affiliation School of Equine Management and Science, Royal Agricultural University, Cirencester, Gloucestershire, United Kingdom

Annette Longland

Roles Conceptualization, Data curation, Formal analysis

Affiliation Equine and Livestock Nutrition Services, Tregaron, Ceredigion, Wales

Patricia Harris

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Mars Horsecare United Kingdom LTD; Equine Studies Group, WALTHAM Centre for Pet Nutrition, Leicestershire, United Kingdom

Leo Zeef

Roles Data curation

Affiliation Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom

Susan Crosthwaite

Roles Data curation, Methodology, Writing – review & editing

Affiliation NIAB, EMR, East Malling, Kent, United Kingdom

Competing Interests

The commercial affiliation with Mars Horsecare for this study does not alter our adherence to PLOS ONE policies on sharing data and materials.