Submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, July 2017.
Thesis
Ph.D. University of Glasgow 2017 School of Veterinary Medicine.
Bibliography
Includes bibliographical references (pages 255-265).
Note
Electronic version also available via Enlighten : Theses http://theses.gla.ac.uk/8326/