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Physics of animal health: on the mechano-biology of hoof growth and form

Al-Agele, Ramzi; Paul, Emily; Taylor, Sophie; Watson, Charlotte; Sturrock, Craig; Drakopoulos, Michael; Atwood, Robert C.; Rutland, Catrin S.; Menzies-Gow, Nicola; Knowles, Edd; Elliott, Jonathan; Harris, Patricia; Rauch, Cyril

Authors

Ramzi Al-Agele

Emily Paul

Sophie Taylor

Charlotte Watson

Michael Drakopoulos

Robert C. Atwood

Nicola Menzies-Gow

Edd Knowles

Jonathan Elliott

Patricia Harris



Abstract

Global inequalities in economic access and agriculture productivity imply that a large number of developing countries rely on working equids for transport/agriculture/mining. Therefore, the understanding of hoof conditions/shape variations affecting equids' ability to work is still a persistent concern. To bridge this gap, using a multi-scale interdisciplinary approach, we provide a bio-physical model predicting the shape of equids’ hooves as a function of physical and biological parameters. In particular, we show (i) where the hoof growth stress originates from, (ii) why the hoof growth rate is one order of magnitude higher than the proliferation rate of epithelial cells and (iii) how the soft-to-hard transformation of the epithelium is possible allowing the hoof to fulfil its function as a weight-bearing element. Finally (iv), we demonstrate that the reason for hoof misshaping is linked to the asymmetrical design of equids' feet (shorter quarters/long toe) together with the inability of the biological growth stress to compensate for such an asymmetry. Consequently, the hoof can adopt a dorsal curvature and become ‘dished’ overtime, which is a function of the animal's mass and the hoof growth rate. This approach allows us to discuss the potential occurrence of this multifaceted pathology in equids.

Citation

Al-Agele, R., Paul, E., Taylor, S., Watson, C., Sturrock, C., Drakopoulos, M., …Rauch, C. (2019). Physics of animal health: on the mechano-biology of hoof growth and form. Interface, 16(155), 1-12. https://doi.org/10.1098/rsif.2019.0214

Journal Article Type Article
Acceptance Date May 22, 2019
Online Publication Date Jun 26, 2019
Publication Date Jun 28, 2019
Deposit Date May 24, 2019
Publicly Available Date Jul 1, 2019
Journal Journal of The Royal Society Interface
Electronic ISSN 1742-5662
Publisher Royal Society, The
Peer Reviewed Peer Reviewed
Volume 16
Issue 155
Pages 1-12
DOI https://doi.org/10.1098/rsif.2019.0214
Public URL https://nottingham-repository.worktribe.com/output/2088597
Publisher URL https://royalsocietypublishing.org/doi/10.1098/rsif.2019.0214
Additional Information Received: 2019-03-26; Accepted: 2019-05-22; Published: 2019-06-26

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