Studies on the role of gonadotropin‐ inhibitory hormone (GnIH) in the neuroendocrine regulation of reproduction in the sheep _____________________________________________________________________ Ika Puspita Sari Department of Physiology Faculty of Medicine Monash University A thesis submitted to the Department of Physiology, Monash University in fulfilment of the requirements for the degree of Doctor of Philosophy July 2010 Supervisors: Professor Iain Clarke and Professor Alan Tilbrook